Crazier Eights: Olympus will be the next Crazier Eights game with a Greek mythology theme. I hope to start a Kickstarter crowd funding campaign for it in February 2020, and I hope it will be released by July 2020. More information.
The spoiler was complete on 1-27-2020, and updated 2-18-2020.
All of the cards from the set are shown below.