iOS 10.3 seems fine. Sad to see that the Hive app is no longer in store and will die with 10.11. Otherwise, no biggy.
Sierra will take some futzing. Karabiner is not doing its job, and Logitech Options also wasn't finding my mouse, though the mouse was still working, at least. There's a software update for that, so we'll see what that does.
No chance to put the two together and see if a new sync will put my photos back as shown in Mac Photos on my phone.