Is the gta 6 trailer ready?

Just imagine: right now at this moment there should exist a (nearly) finished gta 6 trailer mp4 file on a computer at the rockstar games office.

Do you think its already finished and ready or they start filming it ingame right now? Maybe someone from a game studio can tell us, would be interesting to know.

As I know (im working with animation/filmmaking) video projects mostly get finished like a week ago in the post to have some time for feedback and polishing.