Epic Games is changing up Fortnite’s physics engine. The popular battle royale game will move to the Unreal Engine’s new Chaos physics engine with the 11.50 update, which is currently scheduled for early February.

While a change in the game’s physics engine may sound like a big deal, in the announcement of the change, Epic says that the main goal is to make sure that “Fortnite still feels like Fortnite.” In other words, you shouldn’t notice much of a difference. To make things smoother, Epic is also rolling this change out slowly by “starting tests with a small group of players.”

Because of this new update, Epic has also pushed back the start of Fortnite Chapter 2’s second season. This marks the second delay of the current Fortnite season. This season began with the start of Chapter 2 back in October 2019. The season was originally set to end in December, but was extended to Feb. 6. On Friday, Epic pushed the date for Chapter 2 season 2 back to Feb. 20.

As always, this delay doesn’t mean that nothing is happening in Fortnite. Along with the extra weeks added to the season, Epic is also adding new Overtime Challenges for players to complete, and a new two-week event that hasn’t been announced yet. Epic says that it will tease this event on its social media channels.

Notably, Fortnite’s Twitter responded to a tweet about Warner Bros.’ Birds of Prey movie just this morning, saying “See you soon Harley” Birds of Prey hits theaters on Feb. 7 so, that seems like a good guess that the upcoming event could be a tie-in to the Harley Quinn-centric movie.

So far, Chapter 2’s first season has offered fewer changes than previous seasons — at least that Epic has noted publicly — but there’s no way to know if that will continue into season 2. The announcement post does include a few teases of the changes coming next season, but Epic has redacted them out so we can’t see what exactly they say. For now, we’ll just have to wait until Feb. 20 to see what kind of changes Chapter 2 season 2 will bring to Fortnite.