Xbox 360 price dropping to $299.99 on July 6?

What's this? Could it be? An Xbox 360 price drop on July 6? According to this image, the Xbox 360 Pro will drop to $299.99, at least at K-Mart. The little image circulating shows the "Xbox 360 20GB console" with a $299.99 price, but no word on pricing on the Arcade and Elite versions of the console. We had a feeling price cuts would be coming at E3, but it's entirely possible Microsoft waned to get pricing out of the way before the gaming conference to concentrate on other goodness.