I just did the update. Everything seems well. There's one thing that drives me crazy. Try placing a call, then put that call on speakerphone. Now, press the home button and get to the home screen. Does the proximity sensor remain on? Why yes! Of course you're NEVER going to want to use your $300 phone while talking on it!
Please fix it. The fact that it's even broken in the first place is sad. Worth mentioning is that it was doing the same thing when I got this phone in November. A subsequent update did resolve it, though.
Let's hope the next update fixes it!
And let's hope it's not just me with the problem!