1. When is version 0.16 more or less expected?
2. Is there any Christmas event in the game? Because I saw screenshots of Ashley and Violet in the "Santa Claus" girls' costumes somewhere on the net.
2 years ago(+2)
1) When it's ready. Read Runey's Patreon posts for date estimates and progress updates.
2) No, those are promotional art. Violet didn't have one though (as far as I know), she was old Patron reward content that has long since been removed.
Apparently it can be removed, but I don't know how. But let them stay there. At least there's a character gallery. And possibly Mudae players may find their way into your game (as long as they don't turn off the game characters and hentai characters in the draw options). Such a "advertisement" of the game.
PS. Violet has nice red-vampire eyes :) She could hypnotize someone with them