_Phase 1_ : Prototype
Threads and Processors.
Main needs to call process

_Phase 2_ : Minimum Viable Product
Main thread is a cfa thread
Basic monitors for synchronisation and minimal lock support.
No internal/external scheduling.
Synchronisation points in thread destructors.

_Phase 3_ : Kernel features
Threads features ex: detach
Internal scheduling
Clusters

_Phase 4_ : Monitor features
Multi monitors calls,
External scheduling

_Phase 5_ : Performance
Proper scheduler
...