Interesting. I don't ever recall seeing it before, but it could just be me. Maybe it's there for major updates and not the sub-version updates. I just have the phone and the watch.I always have to do the agreement thing before I get an update, or it seems like it is every time. I am updating my devices now, too.
This is a huge update...well over an hour if you believe the Status Bar. I hope they don't mess with the interfaces again. Just when I learn whether to turn the bezel or push the button on my watch, they switch it up on me for no apparent good reason.