There are some nice widgets that take advantage of the excellent screen, as well as some features I liked from the original Samsung Galaxy Tab (floating task bar at the bottom). Do expect some Vodafone crapware, they are not as overwhelming as Telstra, but I would love to see the end of this need to blight my experience.
Another improvement is removing the Keis software and building it into the phone as a Over the wire sync system. Elegantly implemented and uses the screen and UI nicely. If there was a mandatory linking each day to back up the phone, this would be a perfect solution.
Battery life is an improvement, I have yet to fully stress the battery as I have learned the Android skill of recharge early and often.
The cameras are excellent; I have taken HDR photos with the 8mp rear camera. With the new updates from Google and Scype, video calls should be great although I have not tested this feature as of yet.
The biggest problem in this phone? It is aggressively trying to save charge by shutting the screen down. There is a widget on the screen that allows you to turn power saving features on an doff, and to tweek the settings, however, no action I take seems to stop the screen dimming and need to swipe back on.