Arknights: Endfield Version 1.1 Old Deep Water Dies launches March 12

GRYPHLINE and developer Mountain Contour announced that Arknights: Endfield Version 1.1, titled "Old Deep Water Dies, by Rising Tide It is Denied," will be available as a free download starting March 12, 2026 at 9:00 AM (UTC+8) for PC, iOS, Android and PS5, with the publisher calling the update the game's first major content expansion since global launch. Dlh's press release framed the update as one that “features a wave of substantial additions and updates to the base experience, signifying GRYPHLINE's commitment to listening to community feedback and delivering consistent, high‑quality content iterations.”

The update was previewed in a Version 1.1 Dev Log presented at 7:30 PM (UTC+8) on March 1, 2026, with Gamsgo reporting that the Dev Log confirmed the March 12 launch time and used a slightly different translation of the title as "When the Old Abyss Dies with the Rising Tide." Gamsgo's Dev Log summary listed two new 6-star Operators, a new explorable map, new systems, banners and weapons, and a version event schedule among the Livestream highlights.

Version 1.1 explicitly adds two new 6-star Operators named Rosy and Tangtang, with Gamsgo noting new gear sets designed around Cryo and Physical mechanics that align with Tangtang and Rosy’s combat playstyles. Gamsgo recommended players "prioritize farming and optimizing set bonuses tailored to these two new Operators" after launch. The update introduces Qingbo Ridge as a brand-new explorable region following Wuling; Gamsgo described Qingbo Ridge as the main storyline stage for Version 1.1 and tied its aquatic theme to Tangtang’s Cryo element.

Sources preserved multiple phrasings for new progression and systems: Gamsgo referenced "the new gear set system," Gematsu and RPGSite described an expansion of the evolving AIC system via a "new hydro‑industrialization system," and Dev Log notes referenced upcoming banners and weapons. Gosugamers added that Version 1.1 will introduce building technology, locations and expanded story content as part of the update.

Player-facing incentives include a launch window offering of 135 free pulls explicitly reported by Gematsu; Gematsu also noted that "player rewards will now be supplemented by:" but the provided excerpt did not enumerate the additional supplements. Producer Light Zhong framed the update as a response to engagement, saying, “Arknights: Endfield’s global player count, playtime, and in‑game activity levels have all greatly exceeded our expectations,” and that Version 1.1 serves as a direct response to that rapid engagement.

Quality-of-life and controller improvements are a major focus: Gosugamers listed sweeping controller optimizations, a construction precision fix so "connections no longer snap during dialogue or combat triggers," a "dedicated button" to move facilities, "A new exploration HUD will enable players to access the minimap and world map while using ziplines," "Operators will now enter Protocol Spaces with maximum HP and Ultimate Energy," and "Red Flash enemy attack telegraphs have also been refined for improved visibility."

Not all sources aligned on developer credit and translation. The press release and Gematsu name Mountain Contour as developer while some coverage and site metadata referenced Hypergryph or Hypergryph Network Technology; Gamsgo used a variant translation of the update title. Version 1.1 is scheduled to go live as stated at 9:00 AM (UTC+8) on March 12, and the Dev Log and press materials indicate further patch‑note detail and an event schedule will follow for players seeking specifics on banners, system mechanics and the full roster of reward supplements.