some allege that there was a stealth OTA update last night that fixed the camera... in my line of work.. when one thing is fixed.. you could break a few things (specially with Moto)..
So.. its either a hardware or software issue.
there was no update, the camera bug is date related and essentially has temporarily fixed itself for now.
mine reset once and a battery pull later, i haven't had any problems.
apps should be linked to your google account so purchased apps
should download again for free. that was how they talked about the platform when it was new at least...
there's programs you can find on the market that will back everything up to your sd card and you can restore them from there onto your new phone
contacts, calendar appts, and emails are stored in the cloud and will resync when you set up the new phone