Evidence:Sourced from the official Z Route: Redemption Discord announcements channel (Z Admin post, 2026/5/13).
This was mainly a UI-consolidation patch: the Warrior, Tactical, and Raid Training Centers were merged into a single Training Center, the Alpha and Beta Research Divisions became one Research Center, and Fighter Command absorbed the Sky Fighter Workshop — in every case existing levels, stats, and Power were carried over unchanged, just reorganized under fewer buildings. Development and Economy tech trees were each split into two more focused branches for easier navigation, and Hero Gear crafting became noticeably cheaper in both resources and time, with excess materials refunded by mail. Zombie Siege difficulty and Alliance Showdown matchmaking were also adjusted.
Condensed independent summary of an official Z Route: Redemption Discord announcement. Not a reproduction of the developer's changelog text — see the official Discord for the full original wording.