I thought the iPhone 4 dev kit has been available for some time? You would think that at least ONE developer would be using all of these resources by now. If there was only one app on the app store that used all the features I mentioned, it would sell like crazy!!!
As it stands, there are only two games I use that have been updated with the retina display. Flight Control which looks good but I don't really play it much and Real Racing which looks good but has a low polygon count. I want to see what the iPhone 4 is truly capable of!
And when it comes to classic apps, I would really like to play Fieldrunners in higher res as well as Plants Vs. Zombies, Robot Unicorn, Doodle Jump, Zen Bound, GeoDefense... and others. You would think in the least that some of these top 20 games would be updated with higher res by now.