Only suggestion for Night Shift would be the ability to have the temperature slider automatically warm over time, just as f.lux does on the Mac. I realize you can set a custom level…but it does not progressively get warmer over time, it simply stays at the default level, or the level you've set. Otherwise, great update. On the first boot or reboot, the usual suspect stutters are present in every spot, until you have performed each action individually. Example: Opening a folder or pulling down spotlight search. Once those tasks have been completed once, they remain fluid until the next reboot. All other areas perform just as the last 9.2 beta IMO. No complaints here, and no bugs yet after day two.