The Linux Foundation's "security mobilization plan"

ARM has deliverd a prototype. I guess it will take many years until we normal mortals working not in any leading edge project will see such stuff. If ever.

Not trying to suggest that rewriting software would necessarily be fast(er). After well over 10 years I still see more X11 than Wayland, although somewhat faster transitions do exist. Several approaches are probably a good thing in real life, only time will tell what wins.