Looks like on the website they're going to be revealing the classes gradually. I wouldn't be surprised with the shift in focus toward skills if there was a healing-oriented class that popped up.
I don't really see Diablo working on a console, but that's just me...
And likewise. It seems like they're just sort of taking little streamlined parts from MMOs to make it a bit easier (I always thought the way they did skills in D2 was clunky at best).