As for the Nokia 920, they had planned on releasing it to Verizon as late as early September. AT&T threw money at them and will pay them full price for each phone. It's the same kind of stuff that AT&T has often done in the past that has gotten them into some trouble, like the iPhone deal that took away so much money from their network. This is a far smaller deal, but AT&T focuses much more on the phone than their network robustness. Though Nokia did break a handshake deal with VZW in doing so. That's why the quad core Nokia is likely to be a VZW exclusive in February or March of next year - and without the same payment from VZW.
The 822 will be shown the door at VZW by January and likely replaced by the 8S in their physical stores, though the 822 will be available through their online store still.