You should be aware of a number of updates to TFS 2010, one is available now, the other two coming soon.... Here they are:
1. TFS has been re-released (available now on MSDN) to include an important fix, solving a specific problem when upgrading from 2008 to 2010. To learn more about this issue see Brian Harry's blog post.
2. TFS update patch (QFE Rollup). Soon we'll release a patch fixing non-critical bugs discovered since the TFS was released back in April. You can find our more here.
3. We'll release a superset version of 2) a bit later, which will include RTM bits of the Lab Management components of TFS.