No issues here and just recently came from an OG Droid. Loving the Rezound and I think you would too. There was an official OTA that was pushed out but mine updated as it was charging out of the box right after activation. Friendly tip, get juice defender and switch to 3g when you need battery life if getting Rezound.
Sent from my ADR6425LVW using DroidForums
I honestly tried Juice Defender on my D2 for like 2 hours and hated it. It would turn off my signal and data when the screen was off so I got no updates. Maybe I was doing it wrong, but I though that was a pretty big sacrifice just for a little more battery life.