http://www.siliconera.com/2018/03/0...hd-games-much-faster-thanks-final-fantasy-xv/
New SQEX interview. Apparently XV's post-launch development deadlines helped them create techniques to develop HD games at a faster speed than before. That's good, I think. I'd rather we didn't have to sit through five-to-six-and-going-into-ten year development cycles every time they create a large in-house HD title. Their staff have also apparently toughened up and sped up.
Oh, and a little more elucidation on the new DLC episodes following Ardyn's: Apparently it won't be about continuing or plugging up the narrative like previous episodes were. Quote: "This new content won’t be anything to keep things going, but rather, it will be offered as something with value, and something meaningful to the player’s experience."