New Tomb Raider game announcement coming in 2018, release shortly after

"Our journey together will begin with a major event in 2018."

Square Enix announced a new Tomb Raider game in a message posted on the series’ official Twitter account.

Here is the message in full:

Square Enix is excited to share some big news with you next year. Honestly, we wish we could share it with you right now, but we’re taking a new approach this time.
A new Tomb Raider game is coming.
Driven by our goal of putting our fans first, we want you to know that it won’t be very long between the official reveal and when you can play.
Our journey together will begin with a major event in 2018. We simply can’t wait to take you on Lara Croft’s defining adventure.

The most recent entry in the series, Rise of the Tomb Raider, launched for Xbox One and Xbox 360 in November 2015, followed by PC in January 2016 and PlayStation 4 in October 2016.