I was wondering the same thing, how does it all work? I wonder if Apple explains it anywhere or has anybody figured it out?I woke up at 11, did some things, and downloaded the update no problems. Took about 10 minutes total.
Before class, I used the sms feature. Was pretty sweet to see: to have something like AirDroid for Android embedded into an OS without having to login to a site. On my way home, I'm texting. Don't even have wifi on, no bluetooth, etc. I get home, open my mac. I see my older messages there thinking.. this isn't gonna sync and the conversations being older are gonna confuse me.
I open Spotify not even 10 seconds later and it starts syncing, in perfect order. Not even connected to my wi-fi/bluetooth, etc. It was like true magic. Wonder how that works, and how the texts synced without even being connected to a wifi network on my phone?
So far so good.
It's all good here, for me anyways. Surprisingly good. Seems the QC control team was taken into the corporal punishment chamber and gotten whipped a few times . I'm very happy so far. I mentioned in another thread that I was especially pleased to notice that when I received a standard ("green") SMS message while my iMac was off, as soon as I turned my iMac on a few minutes later, I got the alert there as well.
If you update through iTunes, you have to download the WHOLE iOS installer package, which is huge obviously. If you do an over-the-air update, you only have to download a "delta" update, which is much smaller.Faster internet connection? It took about 80 minutes total but installed.