On the subject of the free demo's resolution, he said the team used a dynamic resolution, with 1080p being the limit, according to a translation from DualShockers. As for frame rate, which some have remarked could be better, Tabata made it clear that the demo's goal was not to be a technical showcase, but rather to give the players a taste of the world before launch.
The technical specifications for the Platinum Demo are the same for PlayStation 4 and Xbox One, he said, though he's not sure if the same will be true for the final release. He also pledged that Square Enix will spend time between now and launch optimizing the game so it can look and perform as good as possible.
Other highlights from the interview:
Final Fantasy XV will be playable at E3 and possibly other events before launch.
There are no plans to update the Platinum Demo as Square Enix did with Episode Duscae.
Tabata believes there may be free and paid DLC for Final Fantasy down the road, though there is no word yet on what form this will take.
He reiterated that a PC version of Final Fantasy XV could be released after the console launch, but nothing has been decided at this stage.