My initial impressions are pretty poor
In call volume seems pretty similar to me - still have to have it on max to hear people
The widget that allows to turn phone onto vibrate mode has been removed (well silent function has been). NOw you have to press power button to lock phone and then activate silent mode by sliding thingy across. Why do SE insist on making things more difficult than they need to be?!
Still a pain to call someone - why doesnt the dialler 'translate' numbers to digits and allo you to filter search for someone's name e.g. like Thaidial (which doesnt seem to work on 2.1)
Why have they added a SE sync button on widget tool bar when you can set it to auto update and sync? This replaced the silent button I mentioned earlier.
My phone is now laggier than it was before and the home screen transitions still dont slide very nicely (small point I know).
DOnt see any new functionality as yet...overall its 1.6 with a new name - nothing to get excited about at all