As quoted by Yoshi:
Final Fantasy 14: A Realm Reborn will get "a major update every three months" after its release, director and producer Naoki Yoshida said in an interview published today on the PlayStation Blog.

"We're planning on doing a major update every three months once the game has been released and continuously adding large-scale content," Yoshida said. "Ongoing support for the game will be included in the monthly subscription."
I realize patches take time but the stuff missing in game right now is stuff that frankly should have been in at launch. Now that you've seemingly stabilized the servers it seems strange we're going to be waiting another 2 months for the much needed quality of life changes and actual end-game content.