ASP.NET 4.5.1 and Visual Studio 2013
ASP.NET 4.5.1 and Visual Studio 2013 include a new ASP.NET membership system, a new scaffolding system, support for custom web servers, new project templates, performance enhancements, and many other features. For more information, see the following resources:
ASP.NET 4.5.1 and Visual Studio 2013 RC on the ASP.NET site.
The "ASP.NET app suspension" section of the .NET Framework 4.5.1 Preview blog post.