DJI Support has stated:
Hi there, thank you so much for your attention. Please stay tuned with us as our mysterious new product will be launched soon. For more details, you will find out on the launch date.
It’s funny to see a company refer to their own product as mysterious. We truly hope this a full-frame camera as DJI likely has the freedom to be a bit more disruptive and innovative in what they release. They’ve certainly made things interesting in regards to lower-end cine cameras.