Plug in your iDevices and mash that update button. The update apparently has come through for some, but not all. Patience everyone. As far as I know, no multitasking enabled apps are in the store - or none that I use. Unfortunately we’ll have to wait on developers for that. On a personal note, I hope iBooks drops today as well. If you’re a little anxious waiting for it, you can read the sneak peeks. MobileCrunch has some info too.