OpenGL 3.1 on Asahi Linux

Does anyone know how efforts are going to to get Asahi's kernel changes merged back upstream? Has anything been merged upstream already? Is there a roadmap for getting things upstreamed? Are they pursuing an incremental approach to upstreaming individual components or do they have to prove that everything is flawless on Apple silicon before anything can be merged?

This information is on their website wiki. See https://github.com/AsahiLinux/docs/wiki/Feature-Support

The feature table here https://github.com/AsahiLinux/docs/wiki/Feature-Support also tells you where along the path something is in terms of being stable and making it into the kernel. If it just has a release number like "5.19" then that means it was successfully upstreamed as part of that kernel version. Generally, the Asahi team tries to upstream as they go, but if they are uncertain about the overall architecture of a driver they'll hold off to prevent ossifying certain design decisions too early. An example of this is the GPU driver.