Remember J-UCAS? The navy took ownership of that and evolved it into a number of UAV programs compatible with the carriers.

Remember, you only found out the US equipped Hellfire missiles with swords that can assassinate a man in their home when they deployed it. So while you know they already have a refuelling drone and all the investments necessary to launch drones like that from carriers, don't expect to find out a strike platform is ready until it already struck something.