diff --git a/src/Hosting/Hosting/src/Internal/HostingApplicationDiagnostics.cs b/src/Hosting/Hosting/src/Internal/HostingApplicationDiagnostics.cs
index 16b36948af..41b93ac083 100644
--- a/src/Hosting/Hosting/src/Internal/HostingApplicationDiagnostics.cs
+++ b/src/Hosting/Hosting/src/Internal/HostingApplicationDiagnostics.cs
@@ -4,6 +4,7 @@
 using System;
 using System.Diagnostics;
 using System.Runtime.CompilerServices;
+using System.Web;
 using Microsoft.AspNetCore.Http;
 using Microsoft.Extensions.Logging;
 using Microsoft.Extensions.Primitives;
@@ -272,7 +273,7 @@ namespace Microsoft.AspNetCore.Hosting
                     {
                         if (NameValueHeaderValue.TryParse(item, out var baggageItem))
                         {
-                            activity.AddBaggage(baggageItem.Name.ToString(), baggageItem.Value.ToString());
+                            activity.AddBaggage(baggageItem.Name.ToString(), HttpUtility.UrlDecode(baggageItem.Value.ToString()));
                         }
                     }
                 }
diff --git a/src/Hosting/Hosting/test/HostingApplicationDiagnosticsTests.cs b/src/Hosting/Hosting/test/HostingApplicationDiagnosticsTests.cs
index 385424fa67..341c7c6fa4 100644
--- a/src/Hosting/Hosting/test/HostingApplicationDiagnosticsTests.cs
+++ b/src/Hosting/Hosting/test/HostingApplicationDiagnosticsTests.cs
@@ -345,6 +345,35 @@ namespace Microsoft.AspNetCore.Hosting.Tests
             Assert.Contains(Activity.Current.Baggage, pair => pair.Key == "Key2" && pair.Value == "value2");
         }
 
+        [Fact]
+        public void ActivityBaggageValuesAreUrlDecodedFromHeaders()
+        {
+            var diagnosticListener = new DiagnosticListener("DummySource");
+            var hostingApplication = CreateApplication(out var features, diagnosticListener: diagnosticListener);
+
+            diagnosticListener.Subscribe(new CallbackDiagnosticListener(pair => { }),
+                s =>
+                {
+                    if (s.StartsWith("Microsoft.AspNetCore.Hosting.HttpRequestIn"))
+                    {
+                        return true;
+                    }
+                    return false;
+                });
+
+            features.Set<IHttpRequestFeature>(new HttpRequestFeature()
+            {
+                Headers = new HeaderDictionary()
+                {
+                    {"Request-Id", "ParentId1"},
+                    {"Correlation-Context", "Key1=value1%2F1"}
+                }
+            });
+            hostingApplication.CreateContext(features);
+            Assert.Equal("Microsoft.AspNetCore.Hosting.HttpRequestIn", Activity.Current.OperationName);
+            Assert.Contains(Activity.Current.Baggage, pair => pair.Key == "Key1" && pair.Value == "value1/1");
+        }
+
 
         [Fact]
         public void ActivityTraceParentAndTraceStateFromHeaders()
diff --git a/src/Identity/Extensions.Core/ref/Microsoft.Extensions.Identity.Core.netcoreapp.cs b/src/Identity/Extensions.Core/ref/Microsoft.Extensions.Identity.Core.netcoreapp.cs
index 13979d60ae..fa44115139 100644
--- a/src/Identity/Extensions.Core/ref/Microsoft.Extensions.Identity.Core.netcoreapp.cs
+++ b/src/Identity/Extensions.Core/ref/Microsoft.Extensions.Identity.Core.netcoreapp.cs
@@ -15,6 +15,7 @@ namespace Microsoft.AspNetCore.Identity
     public partial class ClaimsIdentityOptions
     {
         public ClaimsIdentityOptions() { }
+        public string EmailClaimType { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } }
         public string RoleClaimType { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } }
         public string SecurityStampClaimType { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } }
         public string UserIdClaimType { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } }
diff --git a/src/Identity/Extensions.Core/ref/Microsoft.Extensions.Identity.Core.netstandard2.0.cs b/src/Identity/Extensions.Core/ref/Microsoft.Extensions.Identity.Core.netstandard2.0.cs
index 13979d60ae..fa44115139 100644
--- a/src/Identity/Extensions.Core/ref/Microsoft.Extensions.Identity.Core.netstandard2.0.cs
+++ b/src/Identity/Extensions.Core/ref/Microsoft.Extensions.Identity.Core.netstandard2.0.cs
@@ -15,6 +15,7 @@ namespace Microsoft.AspNetCore.Identity
     public partial class ClaimsIdentityOptions
     {
         public ClaimsIdentityOptions() { }
+        public string EmailClaimType { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } }
         public string RoleClaimType { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } }
         public string SecurityStampClaimType { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } }
         public string UserIdClaimType { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } }
diff --git a/src/Identity/Extensions.Core/src/ClaimsIdentityOptions.cs b/src/Identity/Extensions.Core/src/ClaimsIdentityOptions.cs
index 54ba1ae069..17f383ab33 100644
--- a/src/Identity/Extensions.Core/src/ClaimsIdentityOptions.cs
+++ b/src/Identity/Extensions.Core/src/ClaimsIdentityOptions.cs
@@ -25,9 +25,14 @@ namespace Microsoft.AspNetCore.Identity
         /// </summary>
         public string UserIdClaimType { get; set; } = ClaimTypes.NameIdentifier;
 
+        /// <summary>
+        /// Gets or sets the ClaimType used for the user email claim. Defaults to <see cref="ClaimTypes.Email"/>.
+        /// </summary>
+        public string EmailClaimType { get; set; } = ClaimTypes.Email;
+
         /// <summary>
         /// Gets or sets the ClaimType used for the security stamp claim. Defaults to "AspNet.Identity.SecurityStamp".
         /// </summary>
         public string SecurityStampClaimType { get; set; } = "AspNet.Identity.SecurityStamp";
     }
-}
\ No newline at end of file
+}
diff --git a/src/Identity/Extensions.Core/src/UserClaimsPrincipalFactory.cs b/src/Identity/Extensions.Core/src/UserClaimsPrincipalFactory.cs
index dd7e316423..859e78ad57 100644
--- a/src/Identity/Extensions.Core/src/UserClaimsPrincipalFactory.cs
+++ b/src/Identity/Extensions.Core/src/UserClaimsPrincipalFactory.cs
@@ -81,6 +81,14 @@ namespace Microsoft.AspNetCore.Identity
                 Options.ClaimsIdentity.RoleClaimType);
             id.AddClaim(new Claim(Options.ClaimsIdentity.UserIdClaimType, userId));
             id.AddClaim(new Claim(Options.ClaimsIdentity.UserNameClaimType, userName));
+            if (UserManager.SupportsUserEmail)
+            {
+                var email = await UserManager.GetEmailAsync(user);
+                if (!string.IsNullOrEmpty(email))
+                {
+                    id.AddClaim(new Claim(Options.ClaimsIdentity.EmailClaimType, email));
+                }
+            }
             if (UserManager.SupportsUserSecurityStamp)
             {
                 id.AddClaim(new Claim(Options.ClaimsIdentity.SecurityStampClaimType,
@@ -154,4 +162,4 @@ namespace Microsoft.AspNetCore.Identity
             return id;
         }
     }
-}
\ No newline at end of file
+}
diff --git a/src/Identity/test/Identity.Test/UserClaimsPrincipalFactoryTest.cs b/src/Identity/test/Identity.Test/UserClaimsPrincipalFactoryTest.cs
index befed38dd9..bcf42f459d 100644
--- a/src/Identity/test/Identity.Test/UserClaimsPrincipalFactoryTest.cs
+++ b/src/Identity/test/Identity.Test/UserClaimsPrincipalFactoryTest.cs
@@ -30,22 +30,33 @@ namespace Microsoft.AspNetCore.Identity.Test
         }
 
         [Theory]
-        [InlineData(false, false, false)]
-        [InlineData(false, true, false)]
-        [InlineData(true, false, false)]
-        [InlineData(true, true, false)]
-        [InlineData(true, false, true)]
-        [InlineData(true, true, true)]
-        public async Task EnsureClaimsIdentityHasExpectedClaims(bool supportRoles, bool supportClaims, bool supportRoleClaims)
+        [InlineData(true, false, false, false)]
+        [InlineData(true, true, false, false)]
+        [InlineData(true, false, true, false)]
+        [InlineData(true, true, true, false)]
+        [InlineData(false, false, false, true)]
+        [InlineData(false, true, false, true)]
+        [InlineData(false, false, false, false)]
+        [InlineData(false, true, false, false)]
+        [InlineData(true, false, false, true)]
+        [InlineData(true, true, false, true)]
+        [InlineData(true, false, true, true)]
+        [InlineData(true, true, true, true)]
+        public async Task EnsureClaimsIdentityHasExpectedClaims(bool supportRoles, bool supportClaims, bool supportRoleClaims, bool supportsUserEmail)
         {
             // Setup
             var userManager = MockHelpers.MockUserManager<PocoUser>();
             var roleManager = MockHelpers.MockRoleManager<PocoRole>();
-            var user = new PocoUser { UserName = "Foo" };
+            var user = new PocoUser { UserName = "Foo", Email = "foo@bar.com" };
             userManager.Setup(m => m.SupportsUserClaim).Returns(supportClaims);
             userManager.Setup(m => m.SupportsUserRole).Returns(supportRoles);
+            userManager.Setup(m => m.SupportsUserEmail).Returns(supportsUserEmail);
             userManager.Setup(m => m.GetUserIdAsync(user)).ReturnsAsync(user.Id);
             userManager.Setup(m => m.GetUserNameAsync(user)).ReturnsAsync(user.UserName);
+            if (supportsUserEmail)
+            {
+                userManager.Setup(m => m.GetEmailAsync(user)).ReturnsAsync(user.Email);
+            }
             var roleClaims = new[] { "Admin", "Local" };
             if (supportRoles)
             {
@@ -90,6 +101,7 @@ namespace Microsoft.AspNetCore.Identity.Test
             Assert.Contains(
                 claims, c => c.Type == manager.Options.ClaimsIdentity.UserNameClaimType && c.Value == user.UserName);
             Assert.Contains(claims, c => c.Type == manager.Options.ClaimsIdentity.UserIdClaimType && c.Value == user.Id);
+            Assert.Equal(supportsUserEmail, claims.Any(c => c.Type == manager.Options.ClaimsIdentity.EmailClaimType && c.Value == user.Email));
             Assert.Equal(supportRoles, claims.Any(c => c.Type == manager.Options.ClaimsIdentity.RoleClaimType && c.Value == "Admin"));
             Assert.Equal(supportRoles, claims.Any(c => c.Type == manager.Options.ClaimsIdentity.RoleClaimType && c.Value == "Local"));
             foreach (var cl in userClaims)
diff --git a/src/Middleware/ResponseCaching/src/ResponseCachingExtensions.cs b/src/Middleware/ResponseCaching/src/ResponseCachingExtensions.cs
index 45d905cea6..8dff8eb2f5 100644
--- a/src/Middleware/ResponseCaching/src/ResponseCachingExtensions.cs
+++ b/src/Middleware/ResponseCaching/src/ResponseCachingExtensions.cs
@@ -6,8 +6,15 @@ using Microsoft.AspNetCore.ResponseCaching;
 
 namespace Microsoft.AspNetCore.Builder
 {
+    /// <summary>
+    /// Extension methods for adding the <see cref="ResponseCachingMiddleware"/> to an application.
+    /// </summary>
     public static class ResponseCachingExtensions
     {
+        /// <summary>
+        /// Adds the <see cref="ResponseCachingMiddleware"/> for caching HTTP responses.
+        /// </summary>
+        /// <param name="app">The <see cref="IApplicationBuilder"/>.</param>
         public static IApplicationBuilder UseResponseCaching(this IApplicationBuilder app)
         {
             if (app == null)
diff --git a/src/Middleware/ResponseCaching/src/ResponseCachingMiddleware.cs b/src/Middleware/ResponseCaching/src/ResponseCachingMiddleware.cs
index b74d3f47cd..dd75fece9f 100644
--- a/src/Middleware/ResponseCaching/src/ResponseCachingMiddleware.cs
+++ b/src/Middleware/ResponseCaching/src/ResponseCachingMiddleware.cs
@@ -14,6 +14,9 @@ using Microsoft.Net.Http.Headers;
 
 namespace Microsoft.AspNetCore.ResponseCaching
 {
+    /// <summary>
+    /// Enable HTTP response caching.
+    /// </summary>
     public class ResponseCachingMiddleware
     {
         private static readonly TimeSpan DefaultExpirationTimeSpan = TimeSpan.FromSeconds(10);
@@ -29,6 +32,13 @@ namespace Microsoft.AspNetCore.ResponseCaching
         private readonly IResponseCache _cache;
         private readonly IResponseCachingKeyProvider _keyProvider;
 
+        /// <summary>
+        /// Creates a new <see cref="ResponseCachingMiddleware"/>.
+        /// </summary>
+        /// <param name="next">The <see cref="RequestDelegate"/> representing the next middleware in the pipeline.</param>
+        /// <param name="options">The options for this middleware.</param>
+        /// <param name="loggerFactory">The <see cref="ILoggerFactory"/> used for logging.</param>
+        /// <param name="poolProvider">The <see cref="ObjectPoolProvider"/> used for creating <see cref="ObjectPool"/> instances.</param>
         public ResponseCachingMiddleware(
             RequestDelegate next,
             IOptions<ResponseCachingOptions> options,
@@ -88,6 +98,11 @@ namespace Microsoft.AspNetCore.ResponseCaching
             _keyProvider = keyProvider;
         }
 
+        /// <summary>
+        /// Invokes the logic of the middleware.
+        /// </summary>
+        /// <param name="httpContext">The <see cref="HttpContext"/>.</param>
+        /// <returns>A <see cref="Task"/> that completes when the middleware has completed processing.</returns>
         public async Task Invoke(HttpContext httpContext)
         {
             var context = new ResponseCachingContext(httpContext, _logger);
diff --git a/src/SignalR/clients/java/signalr/signalr.client.java.Tests.javaproj b/src/SignalR/clients/java/signalr/signalr.client.java.Tests.javaproj
index f7f91926db..251681f130 100644
--- a/src/SignalR/clients/java/signalr/signalr.client.java.Tests.javaproj
+++ b/src/SignalR/clients/java/signalr/signalr.client.java.Tests.javaproj
@@ -2,7 +2,11 @@
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory)..\, Directory.Build.props))\Directory.Build.props" />
 
   <PropertyGroup>
-    <IsPackable>true</IsPackable>
+
+    <!-- This package ID is only ever used along with eng/PatchConfig.props to determine when to patch the Java client. -->
+    <PackageId>java:signalr</PackageId>
+
+    <!-- In servicing builds, this will be set to value if the Java client is not configured to be released in the currently building patch. -->
     <IsPackable>true</IsPackable>
 
     <IsTestProject>true</IsTestProject>
diff --git a/src/Tools/dotnet-user-secrets/src/Internal/InitCommand.cs b/src/Tools/dotnet-user-secrets/src/Internal/InitCommand.cs
index e54f04ff7c..5b8b038596 100644
--- a/src/Tools/dotnet-user-secrets/src/Internal/InitCommand.cs
+++ b/src/Tools/dotnet-user-secrets/src/Internal/InitCommand.cs
@@ -4,6 +4,7 @@
 using System;
 using System.IO;
 using System.Linq;
+using System.Xml;
 using System.Xml.Linq;
 using System.Xml.XPath;
 using Microsoft.Extensions.CommandLineUtils;
@@ -122,7 +123,16 @@ namespace Microsoft.Extensions.SecretManager.Tools.Internal
                 propertyGroup.Add(new XElement("UserSecretsId", newSecretsId));
             }
 
-            projectDocument.Save(projectPath);
+            var settings = new XmlWriterSettings
+            {
+                Indent = true,
+                OmitXmlDeclaration = true,
+            };
+
+            using (var xw = XmlWriter.Create(projectPath, settings))
+            {
+                projectDocument.Save(xw);
+            }
 
             context.Reporter.Output(Resources.FormatMessage_SetUserSecretsIdForProject(newSecretsId, projectPath));
         }
diff --git a/src/Tools/dotnet-user-secrets/test/InitCommandTest.cs b/src/Tools/dotnet-user-secrets/test/InitCommandTest.cs
index 562f149ca4..ee0efce15f 100644
--- a/src/Tools/dotnet-user-secrets/test/InitCommandTest.cs
+++ b/src/Tools/dotnet-user-secrets/test/InitCommandTest.cs
@@ -4,6 +4,7 @@
 using System;
 using System.IO;
 using System.Text;
+using System.Xml.Linq;
 using Microsoft.AspNetCore.Testing;
 using Microsoft.Extensions.Configuration.UserSecrets.Tests;
 using Microsoft.Extensions.SecretManager.Tools.Internal;
@@ -90,6 +91,18 @@ namespace Microsoft.Extensions.SecretManager.Tools.Tests
             Assert.Equal(SecretId, idResolver.Resolve(null, null));
         }
 
+        [Fact]
+        public void DoesNotAddXmlDeclarationToProject()
+        {
+            var projectDir = _fixture.CreateProject(null);
+            var projectFile = Path.Combine(projectDir, "TestProject.csproj");
+
+            new InitCommand(null, null).Execute(MakeCommandContext(), projectDir);
+
+            var projectDocument = XDocument.Load(projectFile);
+            Assert.Null(projectDocument.Declaration);
+        }
+
         [Fact]
         public void OverridesIdForProjectWithSecretId()
         {