This is very interesting indeed! I had heard several years back that the main developer behind Natron, had been working on a commercial compositor. Seems like this is what he has been working on. Alas there are no subtitles for that video, but it looks promising from what I can see.
There is a dire need for an AE alternative, and Hitfilm is definitely not even close. If they do price this correctly it could be a good alternative within a few years. Seems like it will be sold by re:vision effects, and they don’t force subscriptions on their plugins, so I am hopefully that Autograph won’t have forced subs. Subs only on Cavalry really killed my enthusiasm for it, even though they have a decent limited free version of it now.
More info here: https://www.left-angle.com/#page=95