Both Game Watch and the German PlayStation Store explained how long the Final Fantasy VII Remake Intergrade Yuffie episode will last. Both the main game and the add-on are divided into chapters. While FFVII Remake 18 chapters long, the story of the Yuffie episode is told over two chapters. [Thanks, Attack of the Fanboy and Nibel!]
In remembrance, the extra Yuffie episode will follow the ninja of Wutai and Sonon. The two are on a mission for their country to get certain Materia from Shinra. This is a PS5 specific add-on that follows the two. Based on the initial State of Play trailer, it looks like it could be set up during the time Cloud is with Aerith. Although it focuses on Yuffie and Sonon, the earlier footage also showed Tifa and Barret in Sector 7.
People who like the standard or Digital Deluxe version of FFVII Remake Intergrade get the game, Yuffie episode, and a Cacstar shuriken for her to use. PS4 owners who also have a PS5 get a free PS5 version of the game but have to pay extra for the add-on. The PlayStation Plus version of FFVII Remake does not qualify for the free PS5 upgrade.
Final Fantasy VII Remake is immediately available for the PS4, and the PS5 version is on its way on June 10, 2021.