Twenty feature specifications for Visual Studio and .NET Framework "Orcas" are now available on MSDN. They cover areas such as the Developer Tools Platform, Visual C++, and Team Foundation Server.
For C++, plans include a CLR compatible implementation of the Standard Template Library and a move to make VC++ closer to the C++ Standard. According to the spec, "the largest non-goal for this feature is 100% conformance with the C++ Standard".
The specifications for the highly publicized LINQ extensions to C# and VB have not been posted yet. Information on these can still be found on the C# 3.0 and VB 9.0 pages.
All of the specifications are only available in XPS format. This format is being positioned by Microsoft as a competitor to Adobe's PDF format.