The OP FV3 will be run 4 times a day, exactly like the current OP GFS. The main change is that the OP FV3 will be run at 13km for the entire 384hr run, where the current OP GFS is 13km to 240hr and then 27km from 240-384hr.
The FV3 will also have a 3km nest run at 0z/12z out to 120hrs, which will replace the NAM eventually.