Microsoft has filed a trademark for a mysterious S logo today. The logo, discovered by a NeoGAF user, is related to “Video game consoles for use with an external display screen or monitor; video game interactive remote control units” and “Computer game software for use with personal computers and video game consoles,” according to the trademark filing. It’s not clear whether the trademark is related to a new game for Microsoft’s Xbox One consoles, or even Project Scorpio itself.

The timing of the trademark filing is significant. Microsoft just teased its Project Scorpio dev kit, and the company is planning to unveil its Xbox Project Scorpio console on Sunday at E3. Microsoft is expected to reveal the final naming, price, and design of the new Xbox console at E3. Microsoft’s Surface Studio naming was revealed in a trademark filing ahead of the company’s PC hardware last fall, and it’s possible we might be witnessing the logo for the new Xbox here.

Whether Microsoft chooses just Xbox Scorpio, Xbox S, or another name entirely will all be revealed on Sunday at 2PM PT / 5PM ET.