I can't believe no one's mentioned Galcon yet. It was submitted to Apple yesterday! A Peggle upgrade would be great, for music and new levels (Peggle Nights?) WordFu could use an update that actually fixes the lag that was added with OS3 Flight Control would always be welcome, now that their framework supports it Crosswords still has an update on the way, I believe Toki Tori just added a few levels and the promise of more, so that will be fun, too I'm looking forward to seeing what Minigore does beyond the obvious co-op mode But the best updates are often the ones you don't expect.
Defender Chronicles! Also Star Hogs. And Words With Friends, which, I hope, will gain push notification.