The update introduces major content including new operators Tangtang, a 6-star Cryo caster, and Rossi, a 6-star guard, alongside an expanded hydro-industrialization system with Cuprium mining, new logistics, processing facilities, and increased production capacity at Forges of the Sky.

A new Wuling area called Qingbo Stockade is added, with plot developments involving Nefarith and Ardashir, and the Endministrator beginning an investigation into rising tensions in Qingbo Stockade.

Version 1.1 delivers the expanded content slate, emphasizing the new operators, enhanced hydro-industrialization, and updated logistics and processing capabilities.

Arknights: Endfield remains available on PS5, PC (via official launcher and Epic Games Store), iOS, and Android, with new trailer and dev log videos released for multiple language audiences.

Launch brings 135 free pulls, beginner rewards (10 Chartered Headhunting Permits), and sign-in events, complemented by an upgraded Protocol Pass and new limited-time activities, plus expanded AIC Quotas and gear optimization tools.

Rewards and progression are enhanced with 135 free pulls at launch, new beginner rewards, sign-in events, and an updated Battle Pass offering more Basic Headhunting Permits, along with limited-time activities and expanded AIC quotas.

In addition to free pulls and beginner rewards, players gain access to a revised Protocol Pass and expanded gear optimization tools to streamline progression.

Community-driven improvements focus on controller support, longer power line buffers, non-snapping connections during dialogue or combat, easier facility movement, an upgraded exploration HUD, and combat readability tweaks such as enhanced telegraphs and immediate HP/Ultimate Energy on Protocol Spaces entry.

Quality-of-life updates include controller-friendly changes, movable facilities, enhanced exploration HUD for ziplines, and clearer combat telegraphs and readiness indicators on entry to Protocol Spaces.

The updates emphasize smoother controller experience, longer buffers for power lines, adjustable facility placement, improved exploration HUD, and better visibility of combat cues.

A hydro-mining expansion introduces the Hydro Mining Rig and water-flow-based mining, boosting production at facilities like Forges of the Sky and expanding endgame resource output.

Version 1.1, titled Old Deep Water Dies, by Rising Tide It Is Denied, releases on March 12, 2026 as a free update across PC, PS5, and mobile.