I particularly like the idea of "free climbing". This was what jumped out at me as I skimmed through this news.

"Underworld supports a new "free climbing" method that lets Lara climb around Spider-Man-style on concave, convex, and flat ledges, but only as long as the surface is designed to support her. (Think moss, protruding rocks, cornices, and so on...)"

It's something I think many games sorely miss. We also have a similar direction from the creators of Mirrors Edge (a refreshing looking game demonstrated at the recent E32008. Looks like freedom of movement is getting to be a popular upgrade. Let's hope this continues. I've marked this game as "highlighted" One to watch? What do you guys think?