So is there anything actually new or is it just model changes?
Maybe more bugs

?
Is there a 3.3 incest patch yet?
Nope, no update have been made on the incest patch.
To answere those asking why, at first its author repack the all files with modifications as many things needed to be changed (dialogues + minigames could giving you directly +3) throughout game. Boner didn't like this and became very annoying toward the patch creator.
Boner said he wasn't against a patch if it had only the modified files, but at the same time he put DRM (badly preogrammed? it ruined performances). So to made a patch you had to decryp DRM, change files, reencryp DRM, lots of work for this game which is at an early stage and Boner being well know to not finish what he start.
So in short, if you whant to skip explainations about incest patch: Updating the incest patch was too much work for the troubles he gets from making it, plus Boner shady behaviour wasn't of a great help.