I left my phone in the office last night this morning it was still on although battery saver was on. Plugged into my laptop and was offered the update and installed it no issues.
I have not observed any of the issues and I have tried to replicate some of them so currently nothing to report on those specific issues.
My Lumia did suffer some lockups recently which I attributed to receiving calls in areas of low signal as that seemed the only common denominator. So will look out for this issue reappearing.
Obviously my battery is pretty flat right now so the phone is charging. The Nokia Diagnostics used to report 65K as its Charged % that now reads a more believable number currently mine is n ow 21% rising from 19% when I first noticed it.
The Battery Capacity Full charge was 1500 something it now reads 1483 now I will need to see if the Remaining charge when fully charged exceeds the old value and gets closer to that 1483 number.
So currently I can only report that they fixed the Charged % number in the Nokia Diagnostic app