looks like they noticed poeple having problem with a back button with most of the apps so they decided to make it bigger and round and porbably the sketch from ui developers was just a fast drawn circle with no design at all just some shade and light. For some unknown reason someone at headquaters saw this one icon and decided to make the whole redesign around itl
Looks awfull really, is very hard to read, control center is unreadable for me, I have to think twice waht icon is waht. I forgot to make a backup (stupid me) bc I would restore it already. Looks like andtroid 2015 and I'm no joking
the animation seems more fluid but at the same time they stutter very often so yeah