BioWare is currently hard at work on Mass Effect: Andromeda (which was recently delayed to early 2017), but they're also working on a new IP. Details on the new project are few and far between, but a hint was recently hidden in plain sight. Game Developers Conference 2016 was held from March 14th through March 18th, and BioWare's Senior Director of Creative Development, Alistair McNally, decided to tease the game in an unconventional way.
According to a tweet he made after the event, he was walking around the conference wearing a shirt with BioWare's new IP on it, and no one batted an eye! Fans on the BioWare forums have been trying to track down any images of McNally at the event, but so far nothing has turned up.