No it's been a good long while now too. I really hope they update it though because they would be forced to add a restore purchases button, an currently I've got a bug where I can't access on my iPad any of the games I paid for on my iPod.
Thanks for the reply Hmm... I found out that if you hit the 'buy' button again, the app will act as if you are going to purchase a game again, but then upon downloading, you will get a message that says 'You've already purchased this game' and it will unlock it. No saved game progress of course, but at least you don't have to purchase it again. I hope that helps! (p.s. this is for iaps on the same device - I don't know about going from one to the other)