Shadow of the Tomb Raider will be officially announced today at 1pm GMT / 2pm CET, this according to countdown placed on the game's official website (more on the release date here). If you don't want to wait a few hours to watch the first trailer, well, that's been leaked too. The video is available to watch over on Facebook, although it looks like it has been recorded with a mobile phone or something similar, as the quality isn't great.
From what we can tell, it seems as though Lara Croft will travel to Central America, Mexico or Guatemala in her next adventure, in the process wrapping up the trilogy of games that tell her origin story. We'll be back with more info after the official announcement.