Microsoft already has a jump on the holiday season as November rolls around, with such exclusive titles as Forza Horizon 2, Sunset Overdrive and Halo: The Master Chief Collection under its belt, along with various bundles revolving around hits like Assassin’s Creed Unity and Call of Duty: Advanced Warfare. Now, it may have just sounded its loudest warning call to its competition at Sony to date.

The company confirmed today that it would be launching a special holiday promotion starting on November 2nd and running through January 3rd that will introduce a $50 price drop for all of its Xbox One bundles. That means users can pick up bundles like the general Xbox One system, the Sunset Overdrive bundle and the Assassin’s Creed bundle for $349, while the Advanced Warfare bundle will be $449.

While it sounds like the price drop may be temporary, Microsoft may stick with it permanently if enough units are sold, according to sources.

This is a major strike against Sony, as it marks the first time that the Xbox One will be cheaper than the PlayStation 4 console, which launched at market last year for $399 — $100 more than what the Xbox One initially sold for at the time. Microsoft has since made moves to stay competitive, including removing the necessity of its Kinect device to make the hardware less expensive.

The video below goes into more detail about what value Microsoft is bringing to the holiday season, between key first-party releases, as well as third-party titles.