http://www.gameinformer.com/b/news/archive/2016/01/25/payday-creators-new-studio-working-on-cooperative-first-person-shooter.aspx
In 2015, Payday creator and Overkill co-founder Ulf Andersson left behind the studio he helped found in 2009. Upon his departure, he founded 10 Chambers Collective, which today revealed some details about its first game.
While the title doesn’t yet have a name, Andersson suggests that it will follow Payday’s cooperative pedigree. "The best and most memorable moments in life are often ones that you share with others and we believe the same goes for gaming" Andersson says. "In our new game, cooperation will be essential as you progress through the game, the further in you get the more you have to work together."
We’ll share more details as they become available. For now, it seems like Andersson is building upon what he knows from his time working on Payday.