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We'll see... I'm updating my iPad Air 2 right now, just starting the install portion. I've been having WiFi issues at work with my iPhone 6 for a few weeks that I still can't manage to figure out, so just doing my iPad until after work today. We'll see how it goes...
 
Called Apple support and they said it was because the software was still in Beta and that I would need to wait for the official release. o_O I had to notify Apple Support that Apple had already released the final this morning. Glad I could help them out!

To fix the freeze: I simply reset the device (home + power), and the update restarted and finished.
 
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