I mean it is clearly an Air 3S as that is DJI latest bigger drone, and there is NO WAY EVER that you are getting a gimbal that big on a mini drone. The camera next to it is a Sony A series, the Phone is an Oppo find 7 Ultra, its a comparative testing rig, most likely to see how the various sensors are performing vs a range of tech, smartphones do it all the time as do DSLRS, although this type of rig is newly seen from DJI using the mavic 4
A new DJI drone has been spotted during testing. Seemingly destined for release later this year, the drone has been speculated to be something new from DJI's Air or Mini series.