The digital stabilization sounds great but at a loss to image quality. From what they describe, it sounds like the same thing you can do in post. I could be wrong. I may go with a Sony action cam this time around for their optical image stabilization. Maybe I won’t. We’ll see as the latest GoPro picture quality looks pretty sharp.
By far the best updateI see that makes it worth the upgrade is that it’s waterproof without additional housing, which is why I bought the first generation Session. I like that I can use it fishing, kayaking, in the rain, whatevs and still have decent audio. Close second is the built in screen.