It doesn't look like there's anything in the way of information posted that includes screenshots or what apps are included or available? Am I missing the link?
- Apps: It's Linux (like desktop or server), but "image-based" so you install apps in containers like iOS or Android do (and therefore OS updates basically-never break). https://flathub.org is generally the main app store for Linux containerized phone apps.
- Screenshots: It'll look the same as other Linux-on-phones, so like https://en.wikipedia.org/wiki/PostmarketOS for instance. It's just built differently.
[0]: https://framagit.org/linuxphoneapps/linuxphoneapps.frama.io/...
[1]: https://framagit.org/linuxphoneapps/linuxphoneapps.frama.io/...