If you have access to the MSDN downloads or can get a hold of one the DVDs, you can now try out Hatteras and the rest of the Team Foundation along with the rest of Team System. You'll need several machines to install the CTP release of Team System included in the VS2005 Beta 1 Refresh.
This release is very close to what we use everyday. Much of our source code for Team Foundation is stored in a Hatteras server, and we use Currituck for our bug tracking. Microsoft likes to call it dogfooding, and some people really take the analogy way too far. But it's certainly a great way for us to find out what it's like to use the product (I'm happy to report that it's been a good experience thus far).
Having said that, you really should take the warning in the Readme file seriously.
2.1.1 Community Technology Preview Build Quality
Visual Studio 2005 Beta 1 Refresh with Visual Studio 2005 Team System is a Community Technology Preview build. These builds are not for everyone. Because our goal is to offer these builds as they are ready, very little effort is put into stabilizing them or ensuring their quality. Typically, our Beta and released products go through a rigorous testing and quality assurance process before they become available. These interim Community Technology Preview builds do not go through this process. It is very likely that removing the build will introduce significant instability to your installed system and may even cause you to need to reformat your drive. Therefore, do not install these builds on machines on which you depend. Specifically, uninstall of Team Foundation Server is not supported in this release.
Be sure to take a look at Rob Caron's post on the CTP.