Siddharth kumar tiwary has cleared it out in an interview, they wouldn't be showing,grown up krishna! The story started, being all about RADHA-KRISHNA, it would end on RADHA-KRISHNA!😊 Its better, if its kept that way! Also, swastik is known for its LIMITED SERIES formula, along with to the point depiction of the story!
PS: Yes, though, having a SEQUEL is a good idea, as i have personally never seen,visually, the life of krishna after kans-vadh! As far as i have seen, the story ends at kans-vadh and directly, we get krishna in mahabharat! I don't even know, how they reach dwarka actually!