I've tried every game since I updated the device. Very gpu driven games like asphalt 8, dungeon hunter 5, minion rush and mass effect. None of these games make my unit warm, but for some reason candy crush soda makes it pretty warm, not hot though, but just found it odd given the game. Not even the original candy crush saga does that. My guess is something to do with the application itself. So not going to see this as an issue really. The battery has been lasting pretty long for me even when gaming. Though I think it could last longer. In general .29 is pretty nice and stable and haven't experienced any big problems.
One small issue I have with mail is sometimes when I swipe right to delete it shows "deleted" but the mail still stays there. I think it only happens when I tap a mail notification to open mail. Doesn't happen if I open mail directly.