Has anyone herd if DJI has plans to implment Remot ID for Post-production drones already in service, some things I have heard is it may be posable with a simple software update.
I can see this working with Wifi drones but is Mavic 2 or OcuSync, is this still posable?

Until they release the technical (frequencies, protocol specification etc) details of how remote ID should work then its all going to be speculation whether a software update will add it.  DJI drones already have a remote ID feature built in for use with Aeroscope so that might be updatable.