1: It's exactly the same as Windows Mobile 6... er, 5.
That's right -- there are no underlying changes to the core system here at all (Windows CE 5). Sure, there are a few cosmetic tweaks and couple of new pieces of functionality, but underneath what amounts to a new skin, this is essentially the same Windows Mobile you've come to know and... well, you've come to know it, right? Just imagine if Palm gave Palm OS a new paint job and told you it was a new version. Sort of the same idea.