I DL the upgrade and must say the speed in "most" areas has increased significantly. Except...for the camera. In all honesty I cant really say if I'm 100% satisfied with this phone. I'm still having difficulty with pressing the tiny icons, such as send, delete, etc, as it's at times difficult to point ur finger from what u think on the correct option. Yes I have small fingers.
I really do miss the track ball and the options associated with it. I'll give it a few days more, but must admit the thought of going to the curve is weighing heavy.