https://www.pcgamer.com/shadow-of-the-tomb-raider-release-date-seemingly-leaked/

"March 15th, 2018 6:00 am PDT," reads a new teaser countdown on the official Tomb Raider website. It would appear this is when Square Enix plans to officially announce Lara Croft's next outing, Shadow of the Tomb Raider, to the world. 

Inspecting the HTML, however, suggests September 14, 2018 is the game's due date—as uncovered by Twitter person Nibel.