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:
Three Stooges
Munsters
Monkees
Beatles Yellow Submarine
Beverly Hillbillies
Young Frankenstein
A Christmas Story
Willy Wonka
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.