Memory Management in 2021?

[Ola Fosheim Grøstad]

Is there a rough plan for where D is heading with memory 
management in 2021?

Just roughly?

I also wonder if it would be possible to use refcounting (or ARC) 
for everything except class objects. Then add write barriers for 
pointers to class objects only and leave those garbage collected 
with a lower latency incremental mark/sweep collector. That 
should work out mostly ok for performance?