Will we see new enhancements? No, other than tesselation maybe. Will we see a wider usage of current enhancements thats not been seen in most games, most likely.
Using the Crysis analogy doesnt quite hit the mark. Crysis is crippled without DX10.1, and the free 1 less pass, cause everyone knows Crysis looks much better with AA on, imagine if it were almost free?
It depends on utilization of DX10.1 and DX11 for DiRT, and how current DX10, DX10.1 and DX11 cards stack up.
Unfortunately, the only enhancement differences we'll see cant really be compared, unless its console vs PC, and we all know the outcome thatll be. In a game to game comparison, just relying on DX10 vs DX11, every game uses differing amounts of enhancements, while also totally excluding others, so itll be tough. The best we'll be able to do is get that overall effect, and a games genre comes into play here as well.
Nonetheless, Im looking forwards to it, and more