Or possibly later
Wish I had a crystal ball.
It's 9:26am in AZ as well as CA. So, wait a couple of hours. Maybe it'll be available by 12pm-1pm MST.
Wait until tomorrow or the next day to update. The servers tend to be horribly overloaded day of launch.
Best of luck.
Oh, I'm in NO rush to get iOS 7. I'm perfectly happy with 6.1.4 for the time being.
Best of luck to you too.
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