https://www.polygon.com/gaming/2019/1/12/18179991/celeste-dlc-launch-date-xbox-one-ps4-pc-switch

The “thank-you” DLC that Matt Thorson is making for Celeste and its many fans won’t be ready in time for the game’s first birthday (Jan. 25), Thorson said yesterday. But the platformer’s creator did share a few more details about what’s in store.

The farewell levels will be, as promised, hard — “after the current hardest levels in difficulty,” Thorson clarified. There will be new items and game mechanics but no strawberries. And, to reiterate, all this will be free on all platforms.