A U.S. Navy official disclosed that the carrier onboard delivery (COD) variant of the Osprey, CMV-22B, will arrive in Japan to replace the C-2 starting in 2021.
By MC3 Peter Burghart [Public domain], via Wikimedia Commons
While the C-2 operates out of Naval Air Facility Atsugi currently, the CMV-22B is likely to be stationed at MCAS Futenma instead.