Microsoft has already announced developer preview for .Net Framework 4.5 which is expected to come with ASP.Net 4.5, ASP.Net MVC 4, ASP.NET Web Pages 2,Visual Studio 11 and lot more for Windows 8 development.
Below are few important and informative links regarding what's coming new under .Net 4.5 umbrella:
Get the Scoop on the ASP.NET 4.5, ASP.NET MVC 4, ASP.NET Web Pages 2, and Visual Studio 11 Developer Previews
Jon Galloway lists features and top links for the Developer Previews of ASP.NET 4.5, ASP.NET MVC 4, ASP.NET Web Pages 2, and Visual Studio 11.
Visual Basic Improvements in Visual Studio 11
Visual Basic development in Visual Studio 11 offers asynchronous methods, iterators, call hierarchy, the Global keyword and Windows 8 Metro-based applications.
What's New for Visual Basic in Visual Studio 11 Developer Preview
This page lists the new and enhanced features available in Visual Basic in Visual Studio 11 Developer Preview.
Visual Studio 11 Developer Preview Training Kit
Download Visual Studio 11 Developer Preview Training Kit December 2011 Release
Visual Studio 11 Developer Preview
Visual Studio 11 Developer Preview. General Availability
Getting Started with the Next Version of ASP.NET
Get an advanced look at the features we're building for the next versions of ASP.NET Web Forms, MVC, Web Pages, and Visual Studio! Watch this page for video overviews, links, and news.
ASP.NET MVC 4 Developer Preview
Get an advanced look at the features we're building for the next versions of ASP.NET Web Forms, MVC, Web Pages, and Visual Studio! Watch this page for video overviews, links, and news.