Square Enix just posted a very important update on the upcoming Tomb Raider game: it looks like the fanchise's new installment announcement coming in 2018, release shortly after. The post also contains a hint for the new game's title (which has been rumoured already)...
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."
If you take each first letter of each new sentence, it spells SHADOW. So yes, the game will most likely to be called Shadow of the Tomb Raider.