Today, I just visited http://ASP.Net and found that Microsoft has released ASP.Net 4 Beta 2 and Visual Studio 2010 Beta 2. You can find some of the exciting changes on the following URL:

http://www.asp.net/learn/whitepapers/aspnet4/#_TOC1_1

And you can find Breaking changes on the following URL:

http://www.asp.net/learn/whitepapers/aspnet4/breaking-changes/

Some new features are really amazing. Lets start with this new one instead of using old.

Cheers with ASP.Net 4 Beta 2
Vijay Modi