Saints Row 4 standalone expansion Gat out of Hell, enthused on Twitter about contributing to Saints Row and his "life changing" time at Volition. He added it was time to move on to "new adventures" at Valve, though he didn't specify what those adventures would entail.
In other words, expect the portal gun to get a dubstep attachment soon enough. As for Volition, the Deep Silver studio's working with High Voltage Software to bring Saints Row 4 to PS4 and Xbox One on January 27, 2015, with Gat out of Hell releasing on the same day for last-gen, current-gen and PC.
[Image: Deep Silver]