Deadline reports that both are based on graphic novels by acclaimed comics writer Jonathan Hickman, both published by Image Comics. The first, East of West, is set in an alternate America where the Civil War never ended and the country is divided into seven different nations. A comet impact and a series of prophecies brings forth the Four Horsemen of the Apocalypse, who are determined to bring about the End Times.
The other series is Transhuman, which is set in the near future and focuses on a divorced couple who run rival major corporations that provide human beings with the ability to enhance themselves via genetics and robotics. Transhuman ran for four issues back in 2008, while East of West launched in 2013 and is still ongoing.
Kirkman will executive produce both shows along with Hickman, East of West artist Nick Dragotta, and Transhuman artist J.M. Ringuet. The latter three will create both programs and Hickman intends to write East of West, while the search is on for a writer to adapt Transhuman.
Hickman is known for a number of other Image Comics titles, including The Nightly News, The Manhattan Projects, and The Black Monday Murders. He has also penned an extensive amount of series for Marvel, including runs on Fantastic Four and The Avengers, as well as the limited "event" series Infinity and Secret Wars.
Kirkman, of course, is the creator of The Walking Dead comic book, which he still writes, and executive producer on the AMC TV series and its spinoff Fear the Walking Dead. His Skybound banner is now developing shows to launch on Amazon's Prime streaming service, with Transhuman and East of West among the first to be unveiled.