Version 3.1 introduces two new S-Rank agents, Remielle Dan and Sigrid, while offering a free limited S-Rank agent, a matching W‑Engine, and extensive anniversary rewards via in-game mail.

Promotional materials tease mysterious guests and a surprising reveal during the official stream.

Quality-of-life updates expand the standard banner pool to six agents, adding Caesar, Yanagi, and Zhu Yuan, with guidance to manage rotations for balance.

promo materials and an official miHoYo/HoYoverse announcement frame the event with a promotional poster and formal confirmation.

Remielle Dan becomes the first Lumiflux Attribute Agent, syncing damage with the next agent’s attribute via Attribute Flux and entering Phase Flow to buff the squad before a powerful final strike; Sigrid debuts with an Aerial Patrol Spear Form that boosts CRIT rate and weapon attacks.

Remielle Dan can switch between ranged and melee, builds Lumiflux to enter Luminize for stronger Ether damage, and has an exclusive Signal Search available throughout 3.1.

The Long Goodbye story arc includes reunions with Truvia and introductions to Lindverne Sunbringer and Sigrid, with Remielle Dan returning and a looming reveal about a powerful En-Chainer entity.

Seasonal and collaboration events include a Summer Sailume Bay event, Operation Yum food collab with Ellen and Manato, and real-world restaurant tie-ins; HoYoverse will host Zenless Zone Zero exhibitions.

Operation Yum returns with Kyuramen and Haidilao partnerships and global Zenless Zone Zero-themed exhibitions; a Honkai: Star Rail crossover is teased for this winter.

The second-half banner features returning Dialyn, Yuzuha, Harumasa and introduces exclusive Rescreening Signal Search and W‑Engine Reverberation channels, plus a 20% first-time discount and progress carryover for future events.

Rewards in the update include 1,600 Polychromes and 20 Encrypted Master Tapes.

Zenless Zone Zero is celebrating its second anniversary with Version 3.1, The Long Goodbye, slated to launch July 29 and accompanied by substantial rewards and new content.