The forthcoming release next year of Visual Studio Foundation Server will include two methodology templates for the next version of MSF (the Microsoft Solution Framework). These are MSF for Agile Software Development (MSF Agile) and MSF for CMMI Process Improvement (MSF4CMMI). Here is an amended version of a report I recently wrote.
http://geekswithblogs.net/cyoung/articles/63354.aspx