www.silkyvenom.com
On the forums, there is a chart someone set up that shows the race and class combinations. I would link the exact thread, but I'm at work, so I am unable to. It's stickied to the top of one of the upper boards. It's actually a pretty nice little chart. I can't promise it's 100% accurate to any changes, since the NDA keeps people from disclosing anything, but it's the best information we seem to have at this time - or at least that I've found.