The latest update from the Asahi Team, and some better understanding on why some models still aren't supported...
asahilinux.org
the tl;dr is that M1 & M2 support is based off of hardware support for macOS 13.5 in those machines, and the newer machines initially came with macOS 14.... makes it more difficult. They're basically re-re-reverse engineering the hardware? Again? It's almost a completely new project to take on, not just "add new hardware".
Progress Report: Linux 6.19 - Asahi Linux
asahilinux.org
the tl;dr is that M1 & M2 support is based off of hardware support for macOS 13.5 in those machines, and the newer machines initially came with macOS 14.... makes it more difficult. They're basically re-re-reverse engineering the hardware? Again? It's almost a completely new project to take on, not just "add new hardware".