Updated yesterday afternoon. So far so good. I have a couple comments:
Cannot tap artist's name to go to artist in music app if you are not subscribed to Apple Music. Present in every release of iOS 10.
Details here.
I'm not sure what the issue is supposed to be with this. I do not have a subscription to Apple Music. When playing a song, its apparent the "button" takes you to the album. The artist is displayed, but not a separate link. Once the album is displayed, the artist is selectable and it takes me to a screen with information about the artist. If the concern is it doesn't take you to YOUR songs in your library by that artist, then yes I have that issue too. But if that's expected behavior, then I don't.
When using the app switcher to jump into an app, there is a 2 second delay before you can trigger the app switcher again (double-pressing the home button does nothing)
I've tried to replicate this with my 7+ and just don't see it. I can trigger the app switcher without delay.
One thing I have seen that's interesting. Before I updated, I had Wi-Fi calling with AT&T. Now that I've updated, I'm not seeing the phone switch to Wi-Fi calling at home. I looked at the settings and saw it was still selected as an option. So I looked at the "address", or tried. The first time an error popped up saying to try again in a minute. I did and was able to get to the setting. No address was initially displayed but it was there when I continued through and eventually "saved" it. Still no Wi-Fi calling.
Not sure about the storage affect of updating on my 7+. But I did look before updating my iPad Air 2 and it gained about 2 GB.