Today we released Beta 2 of VS2008. This is the first public release from Microsoft that contains a nontrivial amount of code that I wrote (even though I haven't written too much code just yet). I had barely synched up the source tree and only fixed a couple of bugs when we released Beta 1 but now I've found my feet and am contributing more.
If you can, please download it and let us know what you think. If you don't have the time at least take a look at the overview video showing some of the major features. You should also check out Ian's entry about controlling data collection while profiling. Hopefully I'll have time to go through some of the new profiler-specific features soon.