Well you can read all about it on Soma's blog -- today is the day!
I'm really proud of the work we did in this release and I'm especially proud of that performance work -- great results in many areas with Linq and VB taking top honors from me on really getting the perf out. But those are just my personal favorites -- what could I say in just a few words about a product that's so expansive? There's just so much to see!
Get it, explore, and enjoy!