The Asahi Linux developers involved with working on Linux support for Apple Silicon M-Series devices have put out a new progress report on their development efforts.
Asahi Linux developers have kept working on new kernel patches and some being upstreamed for Linux 6.17 and 6.18 cycles, as previously covered on Phoronix. Notably with Linux 6.18 is the Device Trees for the Apple M2 Pro / Max / Ultra devices albeit more driver code is still working its way upstream.
You’re confusing alpha and beta versions with an actual release. A release without long term support is still a release.