Zengine as the "Legacy" System?

Hello all,

Just curious if anyone has any insights on Zengine's long-term status at Submittable.  I know it is now a 'legacy' system that gets less attention than NextZen does, but I also see certain updates coming through more often than they used to.  

Just trying to get a clear picture of what resources and aren't getting poured into Zengine at the moment, and wonder if others are asking the same quesitons.