I updated Real Racing 2 HD on my new iPad. While it does look very sharp, the frame rate seems to be lower than on the iPad 2 before the app got updated to support the new hi-res screen. That was always my concern ever since the rumors started flying about a 2048x1536 screen in the iPad - how well can a mobile device handle 3D graphics at that insane resolution?
I bought iPhoto on my 4S on the day it came out. It is much more fun to use in the iPad. iPhone + iPad + iPhoto + Photo Stream is probably the top feature of the iOS ecosystem.
Modern Combat 3 also got updated to 2048x1536. On sale right now for 0.99, a giveaway!
I'll probably splurge on Sky Gamblers later on today.