I am speaking unofficially as a CVX forum moderator and outside observer/analyst without specific knowledge of the matter at hand. I am not speaking officially for CVX Research, because I am not CVX’s developer (@mcg is) nor employee.
However, senior development staff have been dropping like flies from (IBM) CPLEX in recent months, with several of them moving to Gurobi. Unfortunately, despite its storied heritage, I think senior IBM executives no longer view CPLEX as a strategic priority, and I don’t think the future of CPLEX development is bright. This disappoints me, because as an Operations Research person, i think strong oompetition is good
When viewed in combination with the very limited development of CVX in recent years (the only major development effort in recent years was to include support for use of Mosek 9.x’s native exponential cone capability in CVX 2.2., released in January 2020), I wouldn’t hold out much hope for CPLEX support in CVX, even in a non-bundled fashion, as described in @mcg’s above post from March 2015.