The road to progress, especially in the tech realm, is almost never a straight and smooth one. Few companies actually understand this better, in practice, on a grand scheme than Google - an innovator, startup adopter and visionary for many breakthroughs, but also a cold executioner for many others. It seems Project Tango - the ambitious AR platform, is officially getting the latter treatment as well and heading towards the discarded idea pile. Pretty fast at that, with an expiration date set for March 2018. Still, as sad as this news is for AR enthusiasts, not to mention early...
Source: https://www.gsmarena.com/google_is_killing_off_project_tango_come_march_2018-news-28748.php