Wow! Thanks for pointing this out! I had no idea it was coming so soon. I'm so excited to upgrade. This is particularly useful for some niche compilers (like Poly/ML) who have special features for only linux-x86_64.
Actually, I may have gotten my facts mixed up. It is Golang that only supports some compiling features on linux-x86 like shared object libraries or something along those lines. I can't remember off the top of my head and I can't seem to find what I'm looking for.