Square Enix CEO Yoichi Wada has revealed at an earnings briefing that the company is working on another MMO alongside Final Fantasy XIV (through Andriasang). The game is going to be announced later this fiscal year. Apparently the goal is to have 2-3 large scale MMOs to secure stable cash flow.
Square Enix have been struggling to get still-in-beta FFXIV to a level of quality they can accept, and Wada noted that the game will take “a bit more time” until actual release. They also run the still-active Final Fantasy XI.