Yeah! Adobe put out the final version of Lightroom 2.1. Mac version here. Windows version here. This update fixes many bugs that were present in 2.0 and is definitely worth it. Some things were already fixed in 2.1 RC, but this introduces some extra fixes and it's quite a bit faster than 2.1 RC letalone 2.0.
At the same time, Adobe released beta 2 of the camera matching profiles. These profiles are superb and they fixed some small issues in the highlights and other things. Definitely get them as fast as you can. The profiles are superb.