Looks interesting. It also looks like they're planning on opening it up a bit, but people are still waiting for ssh access etc [1].
[1] https://www.reddit.com/r/Supernote/comments/nhfexf/is_root_a...
[1] https://www.reddit.com/r/Supernote/comments/nhfexf/is_root_a...
I hope that in the future we will get an SDK to create App which integrate nicely into the device to extend it. As it is for me a single task device, a bit like a cordless phone or my HiFi setup, I do not need it as open as my laptop which has been running Linux for the past 20 years.