I told my gf to update her phone and watch (7+, S2).
The level of jank she now has is unreal. Her watch battery is toast by 8pm each day, never a problem on WatchOS 3.
Her hotspot, which she uses for call (she's an NP) doesn't work. When she turns it on and tries to connect a device, the screen janks out and moves up and down really fast, then stops (kinda like rapid graphical jittering). Never connects, so the hotspot never works now.
I know, reset and re-install a backup, but she's on call for the next week and can't risk missing a call.
I really hope Apple has a major 11.1 going out to everyone soon. Bugs galore as it stands now.