I'm hoping they do add more of the old entries. If you look at the list from the previous context, some of those entries didn't make it into the game until ShB launched. I think they might just have a lot of designs shelved to slowly funnel out over time (as well as some hoarded for holidays like the kiddie pool).

All else fails, keep a list if your favorites, and in a year if they still aren't out or at least hinted at being worked on, start raising some buzz about them.