I'm not going to preorder it anytime soon, I would rather see (independent) reviews of a finished product first. ON their website, they note that it could be good for retro gaming (though that price for the chipset isn't great compared to the competition, but you get open hardware + modularity!), as a music player (audio jack!), and sysadmin / networking diagnostic stuff (where Linux is preferred over Android or iOS), but obviously there are better devices for each of those use cases. Few devices can do it all though, and you would be supporting open hardware and all that jazz. They also say that it could be useful for testing Linux mobile apps and that sort of stuff (since it's an ARM chip w/ optional LTE support), but won't be too good as a daily driver phone (no earpiece speaker, LTE being an optional upgrade).

I probably won't get this, as I already have a computer (which does run Linux!) and smartphone and don't need/want another fun Linux device (my OnePlus 6 running postmarketOS fulfills that role already).

Might be nice to read ebooks on.