@ Hump - Its largely a graphical overhaul of the PS2 / Xbox versions but not just a total upres job... the vehicles, characters are all new, as are most of the world assets i.e they aren't xbox assets with new shaders on.
For me, the main consideration to bear in mind is that this isn't a port of the PC version - its a slightly different game aimed at consoles, for instance there is a SP campaign (albeit a 'lite' version). It also wasn't wholly developed by DiCE.
The demo is worth a punt, at the end of the day you've got nothing to lose (apart from a little bit of your gaming soul if you don't like it
B: Pinky, are you pondering what I'm pondering?
P: I think so, Brain, but where are we going to find a duck and a hose at this hour?