I played the beta through a couple times. Can't say I was impressed at all. Really no different than diablo 1. Graphics are a few years outdated already.

Gameplay through the first ~11 character levels was totally the same. Even at higher levels with runes and such I don't know that different characters of the same class will ever really play much different.

I'll probably pass on D3. I am sure I can find other, more fun, games to waste my time on.