I currently have the 4.3 update, installed it the first night without any issues. There are small little UI changes and animations seem smoother than 4.2.2. We now have colored emoji support on the stock Samsung keyboard if you hold the voice control key, which is nifty. One thing i found amusing was that aqua mode has been taken out of the camera, i guess Samsung/AT&T didn't want people purposefully dunking the phone after the earlier mess ups. 4.3 is more of an under the hood update to android so i wasn't expecting much. I really hope we got a 4.4 upgrade but i doubt it due to AT&T Hardly acknowledging this update.