http://forum.ea.com/eaforum/posts/list/7405234.page

the offsides video was really the only new thing I see.. the AI puts their backskate out to avoid offsides.

There are only 2 more updates they're planning on giving out: 1) something about Be a Pro, nobody cares.  2) Online communities.

That effectively means that NHL 12 is no different from 11.  Maybe you can play it first, see how it is.  I might not even bother