It looks like the Liberux Nexx is no longer the only upcoming RK3588s phone:
The DawnDrums Divine D will use the same very SoC, running a Debian/@mobian based OS called DawnOS (with GNOME Mobile or Plasma Mobile).
(My #D key needs a break now 😉 )
Docs: 
Status page:
Github: 
Subreddit: https://www.reddit.com/r/dawndrumsdev/
YouTube: https://www.youtube.com/@dawndrums-o7m/
Mastodon: 
Dawndrums documentation | dawndrums
Introduction
Current status of development | dawndrums
Divine
GitHub
GitHub - dawndrums/dawndrums: Main repository
Main repository. Contribute to dawndrums/dawndrums development by creating an account on GitHub.
Mastodon
dawndrums (@dawndrums@mastodon.social)
17 Posts, 4 Following, 234 Followers · Embedded Systems Designer
https://dawndrums.tn