Filecheck has been asked for since beta. The topic has been popping up just to die off pretty quick without any visible reaction from the devs. That could either mean they already included it into the 2.0 client, or don't think it's necessary. Take your pick.

@wolfspirit: from what I saw so far, it's more often a corruption issue than anything else. People who had been playing fine pre-patch suddenly end up having random graphic glitches. When re-installing the game helps, then it can't see how it can be a driver issue :x