Final Fantasy XIV producer Naoki Yoshida said during a Nier Reincarnation Square Enix stream that Final Fantasy fans can expect news regarding part 16.
A new Final Fantasy 16 trailer is set to air soon. In fact, the game is near completion from a development standpoint (via Siliconera and Twitter user Aitaikimochi). Square Enix planned to release the trailer already, but was delayed due to various factors.
Yoshida added that the dev team has spent a long time polishing and debugging the game.
Final Fantasy 16 is in development for PlayStation 5 and possibly for PC.