I just talked to the DJI customer service and got all the answers. The O3+ on the aircraft should give 15km range even on the standard controller.
I inquired about the telephoto lens RAW capability, he took a couple mins and talked to the senior team and said that there is currently no plan on adding support for RAW/manual mode in telephoto lens and that they will take my feedback and to watch out for updates on their website. So it is just a marketing gimmick after all
Due to the O3+ image transmission system of the DJI Mavic 3 aircraft, it can also achieve the same maximum image transmission distance and specifications as DJI RC Pro when use with RC-N1(the standard remote controller)
I inquired about the telephoto lens RAW capability, he took a couple mins and talked to the senior team and said that there is currently no plan on adding support for RAW/manual mode in telephoto lens and that they will take my feedback and to watch out for updates on their website. So it is just a marketing gimmick after all