Yes, Virginia, there is a submarine payload module that could launch drones

C4ISRNet – A new module will outfit the Navy’s Virginia-class submarines with a series of useful tubes waiting to be filled with possibility. New missiles and possibly torpedoes will likely form the bulk of new payloads for the Virginia Payload Module (VPM), but one of the possibilities is as an exit point for vertically berthed underwater uncrewed vehicles, a home and launching point for robots waiting to scout the surrounding sea.