The official website for Tomb Raider is currently displaying a countdown set for March 15 at 6 AM PDT. This looks to be for the announcement of Shadow of the Tomb Raider. If you search the source code on the page, it states the game will launch for PlayStation 4, Xbox One and PC. There is also a date on the code. It states  the game is available September 14, 2018. This may possibly be the release of the game. Lastly, the code also states that Shadow of the Tomb Raider is the climatic finale of Lara’s origin story. The reveal date could also come on April 27 with the announcement of the game for March 15. April 27 is also a date listed on the code. Square Enix has stated previously that a new game is on the way.