UPDATE: It's going free-to-play, Turtle Rock has confirmed.

ORIGINAL STORY: A countdown has appeared on Evolve's official website, almost 18 months after the game's release.

Evolve countdown

The clock seems to be counting down to 5pm BST tomorrow, July 7, and is joined by the hashtag #StageUp. There aren't any other hints as to what it could be counting down to.

Some have speculated that the game could be transitioning to a free-to-play model, while others have guessed that it could be counting down to the announcement of a sequel. Whatever it is, expect something big to be revealed tomorrow.

Evolve launched on PS4, Xbox One and PC in February 2015. It was a bit of a disappointment.

Source: evolvegame.com