The Kickstarter for Winter Romance also introduced new promos in the form of alternate text cards and a new private butler. The private butler is, as of this writing, the only private butler currently released.
PR43: Chapel (Alternate Text - Building) - Requires Tanto Cuore or Expanding the House or Winter Romance
PR44: After the Banquet (Alternate Text - Building) - Requires Winter Romance
PR46: Compromise (Alternate Text - Drama) - Requires Winter Romance
PR47: Hated (Alternate Text - Drama) - Requires Winter Romance
PR48: Loneliness (Alternate Text - Drama) - Requires Winter Romance
PR49: Growing Closer (Alternate Text - Drama) - Requires Winter Romance
PR50: Chance Meeting (Alternate Text - Drama) - Requires Winter Romance
PR51: Ross Allison (New - Private Butler) - Any Tanto Cuore Base game