Worked fine - I had some dropped voice calls prior to this update - 5 by my count since July. Apps crashed (abrupt return to the home screen while using an app) and SMS Text service lagged - the keyboard wouldn't respond at the speed I was typing at. The software update allows data service to be more functional, calls are fine without dropping, bluetooth headset doesn't disconnect anymore, and apps are crash-free.
This doesn't fix everything, but it is a step in the right direction. My battery life has NOT improved.