The Verge is reporting the rumor in some detail, suggesting that the new phones will support the Qi wireless power standard, making it compatible with other wireless charging systems. While there's no way of confirming whether the rumor is valid, Nokia designer Marko Ahtisaari did earlier this year suggest to the Guardian that wireless charging was something the company was considering.
The Verge also reports that "sources close to the matter" have have disclosed that the flagship Lumia 920 will pack 32GB of storage, 1GB of RAM, a 1.5GHz dual-core processor, and a 4.5-inch HD display. The Verge also claims that the 920 will feature a PureView-branded 8-megapixel camera—not the 41-megapixel example of the company's 808 PureView handset—and a 1.3-megapixel camera on the front. Elsewhere, the Verge also claims the 920's little brother, the 820, will feature a 1.5 GHz dual-core processor, 1 GB of RAM, 8 GB of storage, and a microSD slot for expansion's sake. No details on the 820's camera, though.
While the Verge seems certain these specs are correct—and they might be!—it's impossible to say with certainty that's the case. We don't have long to wait though: Nokia is holding an event with with Microsoft on September 5th, and it seems likely that any new handsets will be officially launched then. [Verge, evleaks]