The highly anticipated Version 1.1 of Arknights: Endfield is set for release across various time zones, with conflicting official statements and player-facing reports creating a complex timeline. A new "Tangtang" banner is also slated to appear within this update.

A critical divergence exists between reported release dates. While some sources point to a March 11/12, 2026 window for Version 1.1, others consistently cite January 22, 2026, as the global launch date for the game itself. This discrepancy in release timelines, particularly concerning the update versus the initial game launch, requires careful attention.

TIMING OF THE ROLLOUT
Initial reports indicate that maintenance for Arknights: Endfield Version 1.1 begins on March 11, 2026, with an end time that varies based on region. For instance, specific maintenance windows are listed as concluding between March 11, 2026, 09:00 PM and March 12, 2026, 07:00 AM. Players in the Eastern Time zone (UTC-4) are slated to experience the update on March 12, 2026, at 12:00 AM ET. However, the bulk of the global player base is expected to access Version 1.1 on March 12, 2026.
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"Arknights: Endfield 1.1 is coming out on March 12, 2026, at 12:00 AM ET (UTC-4)."
CONTENT IMPLICATIONS
Version 1.1 is detailed to introduce a two-phase rollout, bringing new content such as 'Rosy' and 'Tangtang' as two brand-new 6★ Operators. This update also incorporates a new 'Gear Set System', offering up to ten distinct sets to enhance build customization. A new map, Qingbo Ridge, will also be available for exploration.

Beyond operator and map additions, Version 1.1 features a new 'Hydro-Industrialization' system, which expands upon the existing AIC building mechanics and introduces the ability to mine a new resource, 'Cuprium', via a 'Hydro Mining Rig'.
THE "TANGTANG" BANNER
The Tangtang Banner is scheduled to run from March 11, 2026, to March 29, 2026 (Phase 1). This period coincides with the rollout of Arknights: Endfield Version 1.1.
BACKGROUND ON RELEASE REPORTING
Conflicting dates for the initial global release of Arknights: Endfield have been circulated, with sources suggesting January 22, 2026, as a primary release date. Various time zones are provided for this earlier launch, including:
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January 21, 2026:
7:00 PM PST (Los Angeles, UTC-8)
9:00 PM CST (Chicago, UTC-6)
10:00 PM EST (New York, UTC-5)
January 22, 2026:
12:00 AM UTC-3 (São Paulo, Brazil)
3:00 AM GMT (London, UK)
4:00 AM CET (Berlin, Paris)
11:00 AM HKT (Hong Kong, UTC+8)
12:00 PM JST (Tokyo, Japan)
2:00 PM AEDT (Sydney, Australia)
4:00 PM NZDT (Auckland, New Zealand)
This earlier reporting, primarily from January 2026, appears to pertain to the base game's launch rather than the specific Version 1.1 update which is situated in March 2026. Players are advised to cross-reference information with official channels for the most precise timing regarding the Arknights: Endfield Version 1.1 update.