I don't know what to expect the controller, but given Nintendo's track record lately, it's not gunna be something that I like. A lot of the theroies I have been reading about the controller lately don't make too much sense, just because Nintendo said it would be something that would fundamentally change the way we play games, and that it would be acessable to anyone.
The most common complaint I hear about controllers from non-hardcore gamers are that there are too many buttons. Maybe that has something to do with it.
I'm also not entirely convinced that the "revlolution" lies completely within the controller.