You've probably been waiting on this one for a while — Google has just now updated its YouTube app for the iPad and the iPhone 5's larger screen.
The app also got AirPlay streaming. And even though you've been anticipating this refresh for a couple of months, it's no surprise that it took this long, despite YouTube being one of Google's most-used products. Just look at Google Voice — it wasn't updated until last week. [App Store via Google Blog]