I've waited a couple of days to see how things are before posting, I can say for me and also my Brother both on iPhone5s we have noticed the wifi is a lot better than it was and seems so far to continue to be so.
I don't use airplay and bluetooth is on but not used on anything as a rule, but wifi has always been the problem for me, with the drop outs and poor reception, I haven't noticed one drop out yet since this new update so keeping my fingers crossed its worked for many of us that have had to endure this.
I have no statistical evidence but I also think my battery life is also improved now and the biggest change is the iPhone has not got anywhere near as hot as it did before, this has also seemed to coincide with the drop outs for me but I cannot say whether its linked, but either way, in two days the iPhone just hasn't reached the same temperature it was getting, which makes me wonder if the chip or what ever isn't being put under as much strain (yes I'm not a technical wizard with such things), so just my thoughts on that.
I hope its improved the wifi for you guys too and that its remains stable as before I would get a period of time where it would seem to improve after trying out different things, only to revert again, but I don't believe it ever remained stable for two days straight so am keeping my fingers crossed.
I too am also glad to see Apple have at last shown in a more public way there WAS an issue with the wifi, rather than just admitting it on a one to one basis with some of us who spoke to them on the phone as they had done, I also hope we didn't have too many following the so called "advice" from the "experts" on here and changing routers and equipment which most of us with brains knew wasn't at fault.
Shame on you Trolls trying to kill the thread with your nonsense and personal attacks, at least now this has at last shown you all up to be the ones in the wrong as many of us knew full well, you can slink off now and try destroy another thread.
As for the points and dots by your name it means nothing, anyone can post a new thread and then just get his buddies to respond so he can then click the "this helped me" and so they get points easily, so its no evidence of you being either knowledgeable or helpful, and fact is looking at the postings of one of the worse offenders Philly_phandango you can see most of their posts are either copy paste answers repeated time and time again, or sarcastic non helpful insults. About time you grew up maybe. Still, we all see clearly now what you were all about.
By the way don't bother to reply to me here as this is my last read/post of this thread. I don't feed the Trolls!