This is highly unlikely…because the processor power, sensor limitations compared to today’s sensors and limited storage space for any upgraded firmware present problems that mostly cannot be worked around. The AF algorithms simply can’t run on the limited processor capabilities.
While the As don’t have mirrors…that isn’t the reason they’re more capable bodies. The reason is Moore’s Law and the better processors and sensors and the things that those allow the software engineers to do. No mirror means fewer mechanical parts and that’s also good…but it’s the electronics advances that make the difference, along with the wider Z mount and better optical design software running on similarly more powerful computers that make the Z lenses better across the board than the F mounts.