I've only recently started working on the project.
Although the idea for it came about much earlier. There was even an idea to take the FreeBSD kernel.
I decided on the Linux, and the x86_64 architecture because it seems easier with the LinuxFromScratch project.

Try to finalize drivers and kernel configuration.
Basic console programs and maybe a simple package manager.
APFS support ‘from the box’, maybe only RO for first time.
WLAN improvement, ‘cause now there is a RTL & BRCM have problems.

You can read the status of the system in the repository.
Just recently, v0.3-Alpha was released, and as for me, there are a lot of new things in it compared to v0.2.
I think there will be a LiveCD ISO image ready, for boot up on real machine from USB stick or Ventoy.