Despite the subsidized pricing, off-contract AT&T is asking for $10 more ($439.99) for the older handset than for the Nokia Lumia 925. That might have to do with the fact that the former model is stuffed with 32GB of storage, twice what the newer unit contains. And don't forget that wireless charging is built into the older phone.
On October 22nd, we expect to see Nokia introduce the first Windows Phone powered phablet, the Nokia Lumia 1520 which will change Nokia's lineup.
Nokia Lumia 920 is now 99 cents on contract at AT&T
source: AT&T via WPCentral