http://www.techradar.com/news/shadow-of-the-tomb-raider-release-date-news-and-rumors

Update: It's finally happened. After months of rumors, Square Enix has finally confirmed the existence of a new Tomb Raider game. 

The news came via the official Tomb Raider Twitter account which, although light on details, promised that we'd see more at a 'major event' in 2018.