There's quite a few iPhone games in the works with trailers or gameplay videos that have been released recently that all look fairly promising. All of these games are in different stages of development, but each trailer is totally worth watching, especially the Giant Moto video if you have fond memories of Excitebike.
We've been keeping a close eye on 100 Rogues since it first showed up on our radar late last year. Recently we took a closer look at the game at GDC this year, and this new video shows how playing the game will work in even greater detail.
According to the thread in our forums, Giant Moto is going to come with 6 tracks, 4 different bikes, and AI opponents with 3 difficulties. I can't wait to get my hands on this game, as I've been waiting for a truly excellent Excitebike-like game for the iPhone.
Sure, there are a ton of zombie games on the App Store already, but this one looks like it could be cool. The benefit N.Y.Zombies has over the competition is that it apparently is going to be able to have over 40 zombies on screen at once instead of just a small handful like other similar games. We'll see if it succeeds in breaking out of the stereotypical zombie game mold when it's finally released. For more information, check out the thread in our forums.
IMO: The World of Magic
Com2Us is working on a MMORPG that looks fairly impressive. It sports some pretty intense character customization, multiple classes, and other neat perks. They're also running contests in our forums for various prizes while they build up pre-launch hype.