diff --git a/Localization.sln b/Localization.sln
index 0df01140f0..ddfd06056c 100644
--- a/Localization.sln
+++ b/Localization.sln
@@ -11,6 +11,15 @@ Project("{8BB2217D-0F2D-49D1-97BC-3654ED321F3B}") = "Microsoft.AspNet.Localizati
 EndProject
 Project("{8BB2217D-0F2D-49D1-97BC-3654ED321F3B}") = "Microsoft.Framework.Localization.Abstractions", "src\Microsoft.Framework.Localization.Abstractions\Microsoft.Framework.Localization.Abstractions.xproj", "{A1FCF259-70F6-4605-AA2D-E4B356BE771A}"
 EndProject
+Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "samples", "samples", "{79878809-8D1C-4BD4-BA99-F1F13FF96FD8}"
+EndProject
+Project("{8BB2217D-0F2D-49D1-97BC-3654ED321F3B}") = "LocalizationSample", "samples\LocalizationSample\LocalizationSample.xproj", "{55D9501F-15B9-4339-A0AB-6082850E5FCE}"
+EndProject
+Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Solution Items", "Solution Items", "{5E7E7712-E3E3-4AD5-9B89-7FC140359FF1}"
+	ProjectSection(SolutionItems) = preProject
+		global.json = global.json
+	EndProjectSection
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -29,6 +38,10 @@ Global
 		{A1FCF259-70F6-4605-AA2D-E4B356BE771A}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{A1FCF259-70F6-4605-AA2D-E4B356BE771A}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{A1FCF259-70F6-4605-AA2D-E4B356BE771A}.Release|Any CPU.Build.0 = Release|Any CPU
+		{55D9501F-15B9-4339-A0AB-6082850E5FCE}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{55D9501F-15B9-4339-A0AB-6082850E5FCE}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{55D9501F-15B9-4339-A0AB-6082850E5FCE}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{55D9501F-15B9-4339-A0AB-6082850E5FCE}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
@@ -37,5 +50,6 @@ Global
 		{29743CFF-120E-40EB-9B89-5818425946FA} = {FB313677-BAB3-4E49-8CDB-4FA4A9564767}
 		{23E3BC23-3464-4D9B-BF78-02CB2182BEF0} = {FB313677-BAB3-4E49-8CDB-4FA4A9564767}
 		{A1FCF259-70F6-4605-AA2D-E4B356BE771A} = {FB313677-BAB3-4E49-8CDB-4FA4A9564767}
+		{55D9501F-15B9-4339-A0AB-6082850E5FCE} = {79878809-8D1C-4BD4-BA99-F1F13FF96FD8}
 	EndGlobalSection
 EndGlobal
diff --git a/global.json b/global.json
new file mode 100644
index 0000000000..0ddf69c7e5
--- /dev/null
+++ b/global.json
@@ -0,0 +1,3 @@
+{
+  "projects": [ "src" ]
+}
\ No newline at end of file
diff --git a/samples/LocalizationSample/LocalizationSample.xproj b/samples/LocalizationSample/LocalizationSample.xproj
new file mode 100644
index 0000000000..e81f2086c0
--- /dev/null
+++ b/samples/LocalizationSample/LocalizationSample.xproj
@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <PropertyGroup>
+    <VisualStudioVersion Condition="'$(VisualStudioVersion)' == ''">14.0</VisualStudioVersion>
+    <VSToolsPath Condition="'$(VSToolsPath)' == ''">$(MSBuildExtensionsPath32)\Microsoft\VisualStudio\v$(VisualStudioVersion)</VSToolsPath>
+  </PropertyGroup>
+  <Import Project="$(VSToolsPath)\DNX\Microsoft.DNX.Props" Condition="'$(VSToolsPath)' != ''" />
+  <PropertyGroup Label="Globals">
+    <ProjectGuid>55d9501f-15b9-4339-a0ab-6082850e5fce</ProjectGuid>
+    <RootNamespace>LocalizationSample</RootNamespace>
+    <BaseIntermediateOutputPath Condition="'$(BaseIntermediateOutputPath)'=='' ">..\..\artifacts\obj\$(MSBuildProjectName)</BaseIntermediateOutputPath>
+    <OutputPath Condition="'$(OutputPath)'=='' ">..\..\artifacts\bin\$(MSBuildProjectName)\</OutputPath>
+  </PropertyGroup>
+  <PropertyGroup>
+    <SchemaVersion>2.0</SchemaVersion>
+    <DevelopmentServerPort>31454</DevelopmentServerPort>
+  </PropertyGroup>
+  <Import Project="$(VSToolsPath)\DNX\Microsoft.DNX.targets" Condition="'$(VSToolsPath)' != ''" />
+</Project>
\ No newline at end of file
diff --git a/samples/LocalizationSample/Startup.cs b/samples/LocalizationSample/Startup.cs
new file mode 100644
index 0000000000..75d1cd2004
--- /dev/null
+++ b/samples/LocalizationSample/Startup.cs
@@ -0,0 +1,95 @@
+// Copyright (c) .NET Foundation. All rights reserved. 
+// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information. 
+
+using System;
+using System.Globalization;
+using Microsoft.AspNet.Builder;
+using Microsoft.AspNet.Http;
+using Microsoft.AspNet.Localization;
+using Microsoft.Framework.DependencyInjection;
+using Microsoft.Framework.Localization;
+
+namespace LocalizationSample
+{
+    public class Startup
+    {
+        public void ConfigureServices(IServiceCollection services)
+        {
+            services.AddLocalization();
+        }
+
+        public void Configure(IApplicationBuilder app, IStringLocalizer<Startup> SR)
+        {
+            var options = new RequestLocalizationMiddlewareOptions();
+            app.UseRequestLocalization(options);
+
+            app.Run(async (context) =>
+            {
+                context.Response.StatusCode = 200;
+                context.Response.ContentType = "text/html; charset=utf-8";
+
+                var requestCulture = context.GetFeature<IRequestCultureFeature>().RequestCulture;
+
+                await context.Response.WriteAsync(
+$@"<!doctype html>
+<html>
+<head>
+    <title>Request Localization</title>
+    <style>
+        body {{ font-family: 'Segoe UI', Helvetica, Sans-Serif }}
+        h1, h2, h3, h4, th {{ font-family: 'Segoe UI Light', Helvetica, Sans-Serif }}
+        th {{ text-align: left }}
+    </style>
+</head>
+<body>");
+                await context.Response.WriteAsync($"<h1>{SR["Request Localization Sample"]}</h1>");
+                await context.Response.WriteAsync("<form id=\"theForm\" method=\"get\">");
+                await context.Response.WriteAsync($"<label for=\"culture\">{SR["Culture"]}: </label>");
+                await context.Response.WriteAsync("<select id=\"culture\" name=\"culture\">");
+                await WriteCultureSelectOptions(context);
+                await context.Response.WriteAsync("</select><br />");
+                await context.Response.WriteAsync($"<label for=\"uiCulture\">{SR["UI Culture"]}: </label>");
+                await context.Response.WriteAsync("<select id=\"uiCulture\" name=\"ui-culture\">");
+                await WriteCultureSelectOptions(context);
+                await context.Response.WriteAsync("</select><br />");
+                await context.Response.WriteAsync("<input type=\"submit\" value=\"go\" /> ");
+                await context.Response.WriteAsync($"<a href=\"/\">{SR["reset"]}</a>");
+                await context.Response.WriteAsync("</form>");
+                await context.Response.WriteAsync("<br />");
+                await context.Response.WriteAsync("<table><tbody>");
+                await context.Response.WriteAsync($"<tr><th>{SR["Current request culture:"]}</th><td>{requestCulture.Culture.DisplayName} ({requestCulture.Culture})</td></tr>");
+                await context.Response.WriteAsync($"<tr><th>{SR["Current request UI culture:"]}</th><td>{requestCulture.UICulture.DisplayName} ({requestCulture.UICulture})</td></tr>");
+                await context.Response.WriteAsync($"<tr><th>{SR["Current thread culture:"]}</th><td>{CultureInfo.CurrentCulture.DisplayName} ({CultureInfo.CurrentCulture})</td></tr>");
+                await context.Response.WriteAsync($"<tr><th>{SR["Current thread UI culture:"]}</th><td>{CultureInfo.CurrentUICulture.DisplayName} ({CultureInfo.CurrentUICulture})</td></tr>");
+                await context.Response.WriteAsync($"<tr><th>{SR["Current date (invariant full):"]}</th><td>{DateTime.Now.ToString("F", CultureInfo.InvariantCulture)}</td></tr>");
+                await context.Response.WriteAsync($"<tr><th>{SR["Current date (invariant):"]}</th><td>{DateTime.Now.ToString(CultureInfo.InvariantCulture)}</td></tr>");
+                await context.Response.WriteAsync($"<tr><th>{SR["Current date (request full):"]}</th><td>{DateTime.Now.ToString("F")}</td></tr>");
+                await context.Response.WriteAsync($"<tr><th>{SR["Current date (request):"]}</th><td>{DateTime.Now.ToString()}</td></tr>");
+                await context.Response.WriteAsync($"<tr><th>{SR["Current time (invariant):"]}</th><td>{DateTime.Now.ToString("T", CultureInfo.InvariantCulture)}</td></tr>");
+                await context.Response.WriteAsync($"<tr><th>{SR["Current time (request):"]}</th><td>{DateTime.Now.ToString("T")}</td></tr>");
+                await context.Response.WriteAsync($"<tr><th>{SR["Big number (invariant):"]}</th><td>{(Math.Pow(2, 42) + 0.42).ToString("N", CultureInfo.InvariantCulture)}</td></tr>");
+                await context.Response.WriteAsync($"<tr><th>{SR["Big number (request):"]}</th><td>{(Math.Pow(2, 42) + 0.42).ToString("N")}</td></tr>");
+                await context.Response.WriteAsync("</tbody></table>");
+                await context.Response.WriteAsync(
+@"</body>
+</html>");
+            });
+        }
+
+        private static async System.Threading.Tasks.Task WriteCultureSelectOptions(HttpContext context)
+        {
+            await context.Response.WriteAsync($"    <option value=\"\">-- select --</option>");
+            await context.Response.WriteAsync($"    <option value=\"{new CultureInfo("en-US").Name}\">{new CultureInfo("en-US").DisplayName}</option>");
+            await context.Response.WriteAsync($"    <option value=\"{new CultureInfo("en-AU").Name}\">{new CultureInfo("en-AU").DisplayName}</option>");
+            await context.Response.WriteAsync($"    <option value=\"{new CultureInfo("en-GB").Name}\">{new CultureInfo("en-GB").DisplayName}</option>");
+            await context.Response.WriteAsync($"    <option value=\"{new CultureInfo("fr-FR").Name}\">{new CultureInfo("fr-FR").DisplayName}</option>");
+            await context.Response.WriteAsync($"    <option value=\"{new CultureInfo("es-ES").Name}\">{new CultureInfo("es-ES").DisplayName}</option>");
+            await context.Response.WriteAsync($"    <option value=\"{new CultureInfo("ja-JP").Name}\">{new CultureInfo("ja-JP").DisplayName}</option>");
+            await context.Response.WriteAsync($"    <option value=\"{new CultureInfo("zh").Name}\">{new CultureInfo("zh").DisplayName}</option>");
+            await context.Response.WriteAsync($"    <option value=\"{new CultureInfo("zh-CN").Name}\">{new CultureInfo("zh-CN").DisplayName}</option>");
+#if DNX451
+            await context.Response.WriteAsync($"    <option value=\"{new CultureInfo("zh-CHT").Name}\">{new CultureInfo("zh-CHT").DisplayName}</option>");
+#endif
+        }
+    }
+}
diff --git a/samples/LocalizationSample/project.json b/samples/LocalizationSample/project.json
new file mode 100644
index 0000000000..9ab24a6df7
--- /dev/null
+++ b/samples/LocalizationSample/project.json
@@ -0,0 +1,38 @@
+{
+  "webroot": "wwwroot",
+  "version": "1.0.0-*",
+
+  "dependencies": {
+    "Microsoft.AspNet.Server.IIS": "1.0.0-*",
+    "Microsoft.AspNet.Server.WebListener": "1.0.0-*",
+    "Microsoft.AspNet.Localization": "1.0.0-*",
+    "Microsoft.Framework.Localization": "1.0.0-*"
+  },
+
+  "commands": {
+    "web": "Microsoft.AspNet.Hosting --server Microsoft.AspNet.Server.WebListener --server.urls http://localhost:5000"
+  },
+
+  "frameworks": {
+    "dnx451": { },
+    "dnxcore50": {
+      "dependencies": {
+        "System.Globalization": "4.0.10-*",
+        "System.Globalization.Extensions": "4.0.0-*"
+      }
+    }
+  },
+
+  "publishExclude": [
+    "node_modules",
+    "bower_components",
+    "**.xproj",
+    "**.user",
+    "**.vspscc"
+  ],
+  "exclude": [
+    "wwwroot",
+    "node_modules",
+    "bower_components"
+  ]
+}
diff --git a/src/Microsoft.AspNet.Localization/RequestLocalizationMiddleware.cs b/src/Microsoft.AspNet.Localization/RequestLocalizationMiddleware.cs
index 2064690662..43ac3496dc 100644
--- a/src/Microsoft.AspNet.Localization/RequestLocalizationMiddleware.cs
+++ b/src/Microsoft.AspNet.Localization/RequestLocalizationMiddleware.cs
@@ -38,7 +38,7 @@ namespace Microsoft.AspNet.Localization
         public async Task Invoke([NotNull] HttpContext context)
         {
             var requestCulture = _options.DefaultRequestCulture ??
-                new RequestCulture(CultureInfo.DefaultThreadCurrentCulture, CultureInfo.DefaultThreadCurrentUICulture);
+                new RequestCulture(CultureInfo.CurrentCulture, CultureInfo.CurrentUICulture);
 
             IRequestCultureStrategy winningStrategy = null;
 
@@ -56,6 +56,20 @@ namespace Microsoft.AspNet.Localization
                 }
             }
 
+            if (_options.SupportedCultures != null)
+            {
+                // Ensure that selected cultures are in the supported list and if not, set them to the default
+                if (!_options.SupportedCultures.Contains(requestCulture.Culture))
+                {
+                    requestCulture = new RequestCulture(_options.DefaultRequestCulture.Culture, requestCulture.UICulture);
+                }
+
+                if (!_options.SupportedUICultures.Contains(requestCulture.UICulture))
+                {
+                    requestCulture = new RequestCulture(requestCulture.Culture, _options.DefaultRequestCulture.UICulture);
+                }
+            }
+
             context.SetFeature<IRequestCultureFeature>(new RequestCultureFeature(requestCulture, winningStrategy));
 
             SetCurrentThreadCulture(requestCulture);
diff --git a/src/Microsoft.AspNet.Localization/RequestLocalizationMiddlewareOptions.cs b/src/Microsoft.AspNet.Localization/RequestLocalizationMiddlewareOptions.cs
index cfa8e6e196..32827ebb1a 100644
--- a/src/Microsoft.AspNet.Localization/RequestLocalizationMiddlewareOptions.cs
+++ b/src/Microsoft.AspNet.Localization/RequestLocalizationMiddlewareOptions.cs
@@ -17,7 +17,7 @@ namespace Microsoft.AspNet.Localization
         /// </summary>
         public RequestLocalizationMiddlewareOptions()
         {
-            DefaultRequestCulture = new RequestCulture(CultureInfo.DefaultThreadCurrentCulture, CultureInfo.DefaultThreadCurrentUICulture);
+            DefaultRequestCulture = new RequestCulture(CultureInfo.CurrentCulture, CultureInfo.CurrentUICulture);
 
             RequestCultureStrategies = new List<IRequestCultureStrategy>
             {
diff --git a/src/Microsoft.Framework.Localization.Abstractions/project.json b/src/Microsoft.Framework.Localization.Abstractions/project.json
index 63eb5f2524..b725e19028 100644
--- a/src/Microsoft.Framework.Localization.Abstractions/project.json
+++ b/src/Microsoft.Framework.Localization.Abstractions/project.json
@@ -10,11 +10,11 @@
     "dnx451": { },
     "dnxcore50": {
       "dependencies": {
-        "System.Collections": "4.0.10-beta-*",
-        "System.Globalization": "4.0.10-beta-*",
-        "System.Reflection": "4.0.10-beta-*",
-        "System.Runtime": "4.0.20-beta-22904",
-        "Microsoft.CSharp": "4.0.0-beta-*"
+        "System.Collections": "4.0.10-*",
+        "System.Globalization": "4.0.10-*",
+        "System.Reflection": "4.0.10-*",
+        "System.Runtime": "4.0.20-*",
+        "Microsoft.CSharp": "4.0.0-*"
       }
     }
   }