As far as i know there are ( at least in the gallery):
-1 garcia NTR scene (2 cgs) + ending (1 cg)
-1 office scene ( 1 cg)
-1 sato's whore scene (2 cgs)
-2 family route scenes (1 arthur, 1 jack)
-2 jack ntr scenes
-repeatable gym and voyeur scenes
Melvin is gonna come with the second part. I also heard that there is a cg playing sato's route that are not in the gallery, but i haven't replayed yet.
Edit: true ending should be there too, but recollection room lacks of the new endings at the moment ( we have bbc, hero and mistress, we miss true and ntr).