Looks like Christmas has come early in Tree Hill.

It has been around six years since One Tree Hill went off the air - and we'll admit, we definitely miss it. The drama followed the lives (and extensive rivalry) between half-brothers Lucas and Nathan Scott as they vied for a spot on their high school's basketball team. As the show went on, the focus began to shift to the relationships, drama and the brothers' day-to-day lives - and how they ultimately left their rivalry behind and formed a solid bond. The rumour mill went into overdrive about a possible One Tree Hill reunion this week after a number of cast members confirmed they were working on a mystery project. Hilarie Burton, Danneel Ackles, Robert Buckley and Antwon Tanner - aka: Peyton Sawyer, Rachel Gatina, Clay Evans and Antwon 'Skills' Taylor - shared behind-the-scenes photos from the "new project" on social media. Only...the posts were soon deleted. Fortunately, not before the eagle-eyed social media users were able to get screenshots. https://twitter.com/cierraleigh_/status/1006271180645519360 https://twitter.com/MargotFgls/status/1006270957315555330 Many fans began to wonder if the mini-reunion meant we would be seeing our favourite Tree Hill residents again soon. https://twitter.com/alexmacsimp/status/1006289093842612226 https://twitter.com/MartiniHoudini/status/1006280180027936769 https://twitter.com/kayla_grigs0606/status/1006279727169097730 However, it looks like it's genuinely for a new project. There's no hints that other cast members, like Bethany Joy Lenz, Chad Michael Murray, James Lafferty and Sophia Bush, are involved in the mysterious festive project - although TVGuide report both Sophia and Bethany 'liked' Hillarie's post. In the wake of the photos, a number of screenshots with conversations between Hilarie Burton and Robert Buckley talking about doing a Christmas movie together have resurfaced. https://twitter.com/RiverCourtSML/status/1006331522700357632 https://twitter.com/adoringburton/status/1006278184361512962 https://twitter.com/AlexandraW1031/status/1006384759751303169 Basically, we're probably going to have to wait until Christmas 2018 to find out what exactly it is.