Visual Studio 2010 Beta 2 and the Visual Studio 2010 Beta 2 SDK are available on the download center!
The Visual Studio 2010 Beta 2 bits went live this morning for everyone!
You can get access to all our Beta 2 products from the following website: http://msdn.microsoft.com/en-us/vstudio/dd582936.aspx
The SDK is also available from that location. Start using it and we're looking forward to seeing your extensions on the Visual Studio Gallery.