I'd say for me, The phone has got faster, and the camera is much much more better than it ever was in any of the phones yet made. Because Sony has done something to make the phone camera similar to their Cyber shot line up, The interface is better, and camera is taking even sharper pictures than before.
One thing I hate, no more touch sensitive click :/ There's a button on the screen which I must press to take a picture, unlike before where I had to only tap the screen and it'd auto focus and click a picture. So no more HD 8MP self pics for me. And front camera is only 1.3 MP, nothing compared to the 8MP so its a big set back.
Also I had noticed, A new Gallery is added, will be adding the screen shot later in the evening. You'll be amazed to notice something there. :devroll: