These will be the crusader mod eras and versions in order.

Early Access [(Origin1.0, 2.0, 3.0), (Pre Classic 1.0, Halloween Update, 1.1, 1.2, 1.3, 1,4, 1.5, 2.0, 2.1, 2.2, 2.3, 2.4, 3.0, 3.1, 3.2, 3.3, 3.4, 4.0, 4.1, 4.2, 4.3, 4.4), (Classic 1.0, 2.0, 3.0, 4.0)

Era Of Heroes (Post Classic, Indev, Infdev)

Era Of Adventure (Alpha, Beta, Gamma)

Era Of Forests (

Era Of Seas (Oceanic adventure, Deadly Depths, Just when you though you were safe on shore)

Era Of Caves (Subterranean Sights, Deep in the Earth, Ancient Portals)

Era Of War (Villager Army, Illagers of War,

Era of Mountains (

Era Of Swamps (

Era Of The Nether (

Era Of The End (

Era Of Crusaders (

Bold Indicates there will be a vote between which era get implemented first The Vote Will be after the release of era of adventure gamma.

Over the Course of up to the era of adventure the bolded part of the roadmap is subject to change, especially in the classic, indev, infdev, alpha, beta, and gamma.