After they had a fallout with Activision in 2010 over the Call of Duty series, Jason West and Vince Zampella left Infinity Ward and started a gaming company called Respawn Entertainment. They also got a lot of previous employees to follow them to the new company.
Their first game is Titanfall. Looks to be a sci-fi first person shooter with the inclusion of mech suits.
Here's an interview that talks about the specifics of the gameplay and general concepts: