AMC has set a release date for The Walking Dead: World Beyond, but don't go getting too attached. The spinoff series will premiere on Sunday, April 12 at 10 PM after The Walking Dead season 10 finale, with subsequent episodes airing at 9 PM. The network confirmed that World Beyond will only run for a planned two seasons, a format AMC is reportedly going to play around with on all new series going forward. Created by Scott M. Gimple and Matt Negrete, World Beyond will follow the first generation of survivors born into the zombie apocalypse, who only know …