In the blog Scott Guthrie talks about what's been put into the 2.0 SDK update.
“This morning we released the v2.0 update of the Windows Azure SDK for .NET. This is a major refresh of the Windows Azure SDK with some really great new features and enhancements.
These new capabilities include:
Scott Guthrie's blog post: http://weblogs.asp.net/scottgu/archive/2013/04/30/announcing-the-release-of-windows-azure-sdk-2-0-for-net.aspx