I noticed yesterday after installing Visual Studio 2010 on my home system that Team Explorer is included.In previous releases, Team Explorer (the client for TFS) was a separate installation. In VS 2010, it’s now included in the setup for Visual Studio Professional, Premium, and Ultimate. This means you don’t have to run the stand-alone Team Explorer setup afterwards.
A separate installation package still exists for users who need to interact with TFS but don’t need all the other features of Visual Studio.