Microsoft announced that they have bought TeamPrise in the last quarter of 2009, you can read about it in one of the posts I have published:

http://blogs.microsoft.co.il/blogs/eranruso/archive/2009/12/03/microsoft-has-purchased-teamprise-division-of-sourcegear.aspx

The good news are that now we have a new Microsoft tool that is based on the good old TeamPrise, it is called “Team Explorer Everywhere”, it contains the Eclips plug-in and cross-platform command-line client for Visual Studio 2010 Team Foundation Server.

You can read more in Martin Woodward post about it and regarding the upgrades from TeamPrise to Team Explorer Everywhere.

Have Fun!!!