This OS seems to flip, twist, swirl...
A lot of movement for my taste. And all these "cloud" based updates. I wonder. Will they be updated constantly in the background (consuming battery life) or will it take ages for the OS home screen to download all new mails, feeds, and so on and so forth?
I don't like the design of the UI, but that is just personal taste. What I fear is that, although on top notch hardware, the OS will take ages to update all the various icons to their new status.
Navigation seems fine with few apps but I wonder what happens with lots of them.
Also, this OS seems less "customizable" by carriers compared to previous versions (which, admittedly, were underwhelming).
It remains to be seen how carriers will be able (if at all) to customize their phones, and manufacturers as well. Otherwise everyone will compete solely with hardware specs and price, which is what happened with the netbooks.
I, for one, am not impressed by this OS. Don't get me wrong, it's nice to see competition from Redmont. "It's just not my piece of cake"