Upgrade became available for me as well last night (UK X2ME). Nice to see Swiftkey Tablet X in there; seems much nicer than the standard Android keyboard. Also, there now appears to be a warning message when using a "non-optimised" charger. I often use the same non-Motorola charger whilst travelling, and don't remember seeing that message before.
The little flickering squares issue does look the have been sorted, though I did see a lot of flickering of the preview images in the Play Store when I was downloading apps.
The upgrade broke Google+;,it just crashes on start as has been reported by others. Based on the icon it looks like it's an older version. It didn't appear in My Apps as needing upgrade, but when I explicitly searched for it, there was an upgrade button. That looks to have sorted it out.
Haven't noticed any performance difference in real usage.
The little flickering squares issue does look the have been sorted, though I did see a lot of flickering of the preview images in the Play Store when I was downloading apps.
The upgrade broke Google+;,it just crashes on start as has been reported by others. Based on the icon it looks like it's an older version. It didn't appear in My Apps as needing upgrade, but when I explicitly searched for it, there was an upgrade button. That looks to have sorted it out.
Haven't noticed any performance difference in real usage.