According to a report on AppleInsider, the developer pre-release of iOS 4.3 includes gestures for app switching and going to the Home screen. That's exciting news. I was enthusiastically looking forward to the arrival of multi-tasking on the iPad because - unlike the iPhone - I found I was often switching between apps while doing tasks (or just popping over to check mail while writing something.) Quitting and relaunching apps - particularly those that open documents - adds seconds to the process.
But the multi-tasking as first implemented in the last iOS update (not that I'm complaining) requires that you double-tap the home button and then choose the app you want to switch to from a tray. Oddly enough, that's not as smooth, easy and fluid as you'd like.
The new release evidently allows you to swipe to switch apps. That will be so cool!
And, they changed the orientation lock switch to an audio-mute button. In the new release, you can "switch" it back if you want.
I can't wait!
AppleInsider: Apple issues iOS 4.3 beta with Personal Hotspot, new multitouch gestures