Per Collider, producers of the Sonic threequel at CCXP confirmed that there will be more than one post-credits, stretching to the "last second" of the movie. So, you won't want to leave your seat until the credits have completely finished rolling.

Sonic the Hedgehog 3 doesn't hit theatres until December 20 but spoilers have already leaked online, including of its end credits scene which sets up a fourth film. As reported by Kotaku, smart phone recordings of the end credits scene in particular have appeared on social media websites such as X/Twitter,