After revealing their joint Batman '66 pinball machine with Stern, Ka-Pow Pinball announced an online survey to vote for their next theme at Chicago Pinball Expo.
They have 8 themes to choose from:
Beatles Yellow Submarine
A Christmas Story
They were passing out flyers at Expo that also included Blazing Saddles but that one is not on the online survey. At the end you can write in a suggestion.