v1.15.1 introduces electrifying zombies. They damage everything electric or things that have components and are immune to anything but melee. They don't bite so you can safely attack them close up.

v1.14 fixes an incompatibility with Combat Extended
Also, shooting tanky zombies have their deflection sounds back.
And zombies start burning in super hot air.

Zombieland v1.13.3 adds support for Camera+ custom markers and improve the way zombie labels are patched

v1.13.2 adds helps for settings and improved tank damage with CE

v1.13.1 fixes that Combat Extended no longer one-shots tanky operator zombies

v1.13 fixes the broken apparel bug

v1.12.9 fixes the errors that appear if Zombieland is combined with Combat Extended (CE)

v1.12.8 adds settings for and fixes burning zombies; handles modded storyteller difficulty better and makes sure raids never exceed the maximum zombie count

v1.12.7 fixes the temperature bug with modded apparel

v1.12.6 fixes downed zombie targeting and does not block building with dead zombies and adds speed tweaks and no crawling suicide bombers