Both Visual Studio 2010 RC as well a Team Foundation Server 2010 RC are available to MSDN Subscribers as of today.
Go to: http://msdn.microsoft.com/en-us/subscriptions/downloads/default.aspx
If you want to provide feedback on this release then you do so by using Microsoft Connect.
Go to: https://connect.microsoft.com/VisualStudio
For any additional information about versions of Visual Studio 2010 and .NET Framework 4,
Go to: Visual Studio 2010 and .NET Framework 4 Release Candidate