I do not own the camera but, when it came out, some users and the DJI forum offered original video files to download and evaluate.
During daylight, the stabilisation was very convincing handheld, if you want to pan and move.
If you want to walk, steps motion is not eliminated, you can still see and imagine someone is walking up and down.
It also does easy and nice time-lapses in panning, if you leave it on a tripod stand.
What I did not like is that, if you inspect the file at 100 % frame size on a PC monitor (not on a 4K TV that optimizes video) there is a visible noise in the shadows.
I cannot judge if this is more or less than a GoPro 7 records when in 4K, or my Samsung S10 (which mobile I find having less noise at 60 than 30 fps in 4K) but I would not like to spend my time trying to denoise 4K material or sacrifice export to HD to avoid noise. I just beleive one mostly buys that DJI for handheld panning shots.
If someone found a forum or a review with original new model DJI Osmo Action video links to download, please post, as it would be interesting to evaluate how these at 100 Mbps compare to GoPro Hero 7, since many already comment they do not like the crop the new Osmo Action does at 4K, to compensate for smoother than GoPro stabilisation.

....

i hear u. Need something light though

Semi offtopic answer.

"Don't be a beta tester!"

The last time I bought a "hot" action product was Session 4.
Just to experience the huge price drop afterwards,
just to have 2K instead of next model (session5) 4K
just to realise that a future battery upgrade is hard...
just...
just...


Here is a personal preference. Buy every component individual.
In your case an action camera and a separate gimbal.
You can choose from a variety, low or high price, waterproof or not,
handheld or chest mounted, etc.
If camera fail (or want an upgrade) you can keep the gimbal if satisfied.
If the gimbal fail or crash, you still have the camera to use.
Individual camera gives you the freedom to detach the camera from gimbal
and use whatever accesories you wish to mount in car, glass, bike etc.

I have one, I like it alot but haven't submitted anything with it.  Quality is good, stabilization is great but it's useful mostly if you need a gimbal.  It won't replace a real video camera or dslr for most things.  About the "beta" thing, I think the hardware is what they use on their drones so not really a beta although the software is still new.