It looks like those dreamy new multitasking navigation gestures in iOS 4.3 -- pinch to return home, swipe sideways between apps, swipe up for the fast app switcher dock -- may not be making it into the release version, as the iOS 4.3 beta 2 notes say:

This feature will not be enabled in iOS 4.3 for customers, but we are providing this preview to gather input on how these gestures work with your apps.

Developers are encouraged to evaluate any existing interactions in their applications for potential sources of interference. In order to properly interoperate with multitasking gestures, applications must properly handle the following methods and notifications:

Of course anything can and will change between now and iOS 4.3's final release, but without these gestures the iPad version looks suddenly anemic compared to iPhone's personal hotspot update. And it begs the question -- if not now, when? Saving it for Scott Forstall to show off at the iOS 5 preview event in a couple months?

If you want to see what you may just be missing out on now, check out the video on our complete iOS 4.3 beta walkthrough... then sound off in the comments!