I did the Beta for a few weeks. For me there were lots of performance improvements across the board over the previous version. Not a fan of the liquid glass UI, but on the iPad it doesn’t really get in the way. I’m not used to the new window management scheme, but it seems fine once I’m comfortable with it.
On my new iPhone – the liquid glass really bothers me. Everything just seems to busy and cluttered. I"m going to keep poking around with it to see if I can come to a good accommodation…but to my eye it really looks bad on the iPhone.
The functionality seems fine, it’s just personal preference.