There are some performance issues with Visual Studio 2010 that has caused an announced delay in release. It was scheduled for March but is being pushed back a few weeks. A Release Candidate is scheduled for February. TFS seems to be fine.

>I am glad to hear you have not seen any issues. Having been burned by betas or even first versions, I am much more reticent about them (beyond look-and-see playing around) than I used to be.