Users Tux_Linux and Szybet have been working on a new firmware for the PineNote called QuillOS, it uses hrdl's kernel tree along with a custom user interface built on the Niri tiling window manager. It's currently still in development which you can follow the progress of in their Discord server (https://discord.gg/WbB9ZFYNRG).

There is an additional demonstration on YouTube for those interested.

https://youtu.be/HORhEmINF68