The Xbox Series S, an unannounced version of Microsoft's next generation Xbox, was inadvertently revealed by never-before-seen Xbox controllers found in the US. Ads offering the controllers for sale appeared on the website OfferUp and reporters for The Verge verified the device as genuine.

Packaging for a white version of the next generation Xbox controller said it was for use with the "Xbox Series X/S " as well as the Xbox One, clearly indicating that two new Xbox consoles are in production. The Xbox Series X, which Microsoft unveiled in December 2019, has only been seen in black so far.

Microsoft has yet to officially confirm the existence of the Xbox Series S, and the Xbox Series X is still awaiting an exact release date, so it's unclear why controllers for the next gen consoles are already being sent to stores.