Does this mean mechanical-stabilization of some form (like a free-floating lens mechanism)? Or software-stabilization (usually implies heavily cropping the pic)?
From the camera alone there’s no obvious gimbal so unless they’re tricking everyone and using an attached gimbal it’s probably just cropping. Nothing new, honestly. Sony’s higher end cameras all do a pretty good job, but still requires some touch up in post. I imagine their demo reel has a lot of color correction applied too.