I did a quick interview with them at CP+2018 (or maybe 2019) when they had a similar prototype which was using a EF mount (still M4/3rd sensor). They had intended it to be a phone as well, but did not yet have the necessary license at that time. The major physical differences on this version other than the mount seem to be the deep grip, and tilting screen.
"For $600 I'm guessing this will provide a decent image?"
Decent is relevant, and ultimately depends on which M4/3rd sensor they are using among other things. With its Ai and Compared to other android devices using the same type of Ai it has the potential to be relatively exceptional photo and video quality due to the larger sensor.
On a gimbal this might pair up nice with https://vdo.ninja/
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