Earlier in the year, we reported that South Korean publication INews24 had announced that a South Korean game studio, "Studio EX", was working on something that they referred to as "Kingdom Hearts online game"-- an official Kingdom Hearts title for both smartphones and the web.
At the time, we assumed that this was referring to the then upcoming Kingdom Hearts χ[chi]. However, Kingdom Hearts χ[chi] was later confirmed to be developed by Success Corporation in Japan. So, what is the "Kingdom Hearts online game" developed by Studio EX? Today, departing Disney executive John Pleasants had an interview with WSJ, confirming the game's existance.
Looks like this title is different to Kingdom Hearts χ[chi], and is still in development!