Halo Wars? Resident Evil 5?? Not in 2007, you won't. The truth is, though, that even if a handful of 'AAA' titles slip into 2008 and beyond, you've still got a calendar year that, arguably, could be the greatest and--from Blue Dragon to Halo 3--most diversified for any home console, ever. That started with Lost Planet last week, and includes what we'll be seeing on Live Arcade.
I picked the wrong year to try to cut back on the purchases.
EDIT: Alan Wake has already been pretty much officially written off for a 2007 release. Probably Q1 '08, if I had to guess. It could be as much giving the game the spotlight as needing more time in the oven.