Our SO3 operating system is now fully supporting ARM 64-bit (called aarch64) architecture.
User and kernel space is full functional, except the signal handling in user space which is still under porting (should be available very soon).
Currently, the port is available in a dedicated branch 23-porting-on-aarch6.
It will be merged in the master after our internal review process.
Don’t hesitate to give a try and report us any possible issue.