6 new scenarios, 5 of which are animated, of which we already know what 4 are, so at least the 5th scene should have a variation depending on the route you choose since it will probably be like this:
Goro: Yoshinori x Naoto x Goro, Hyunjin's orgy, Scene 5 A*
Aiden: Yoshinori x Naoto x Aiden, Llody x Darius, Scene 5 B*
or two of the scenes are variations of Naoto's scenes, since he is a versatile bottom, he could switch places with Yoshinori in the SPA and club scene.
From what I saw on the Steam page, the additional content is mini images of the DLC characters (Naoto and Hyunjin solo and one of the couple), Lloyd & Darius' Christmas set available in the crack scene and new roleplay minigames.