I would guess the zoo will seriously begin breeding attempts in the next month or so with the aim of spring cubs. I know intros have happened in the past few months but the timing of the birth would have been off so if they weren't interested in each other the zoo was just happy with peaceful coexistence for Ena and Kota.
Ena and Kota have been together for breeding but nothing happened. They peacefully coexisted. No one expected anything from that first meeting anyway. I don't know if they have been together since. Now is the prefect time to really put strong effort into getting them to breed. The best window would be now through January if they are aiming for cubs to display over the summer months. Serious efforts will be put into the snow leopards, tigers (if Kemala ever cycles), and cheetahs (not that I even remotely think anything will happen there either). Soon enough they will also begin to try breeding the clouded leopards too now that they are both fully mature for the upcoming breeding season.