Finally! It looks like today is the magical day for iOS 4.2 to grace waiting iPads and iPhones everywhere.
Just in case you forgot, 4.2 adds multitasking, folders, and Gamecenter to the iPad. iPhone has all that stuff already but it gets something too- Airplay, Apple's wireless music streaming, and Airprint, same idea but with printing, come both to the phone and pad sometime this afternoon.
So you know the routine by now, keep checking for the update then wait an hour for it to download.