I've installed it on my ipad air 2. Love the side by side and P-N-P. Not too crazy about the new "San Francisco" font...it just seems weird. Maybe I'll get used to it.
However, as gfunk alluded to, some applications don't appear to be ready for it and crash immediately. Plex and Crossy Road are two that won't open at all. I use plex a lot, so I'm considering going back.