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Arknights October schedule: what Communication #69 actually states
Arknights event dates and rewards, node by node
| Window | Event | What the official text promises |
|---|---|---|
| Early October | SideStory "Yesterday Sea" | New event stages and story, new operators, outfits and themed furniture |
| Mid-October | Arknights × National Library "Hengyuan Jinliang" | Login sign-in awards event furniture; crossover outfits and avatars go on sale |
| Mid-October | Integrated Strategies "Black Current Tree Sea of the Sunken", update one | New ending, stages, squads, secrecy levels and life-game nodes |
| Late October | "Vision Museum: Evolution" | New event stages, themed scene rewards |
Source: official Producer's Communication #69. Only "Yesterday Sea" is a full SideStory with new operators; the other three are a crossover, a permanent-mode expansion and a collection event.
Arknights Vector Break #3 and the October overlap
Late September is not finished. Vector Break #3 "Eco Mimicry" opens 29 September at 16:00 and closes 20 October 03:59; the milestone board stays open three extra days, to 23 October 03:59, after which the event token stops dropping (source: official event notice). October's first half therefore carries both the tail of Eco Mimicry and the opening of Yesterday Sea. Sanity will be short.
Arknights newsletter reward
Communication #69 grants Orundum ×200 and Sugar Pack ×5, delivered 25 September 17:00 with a 7-day mail expiry. Seven days is short. Clear that mail before October or it is gone.
Arknights Yesterday Sea: what to prepare
Arknights why Sanity matters before Yesterday Sea
SideStories follow a fixed shape: farm event stages for tokens, spend tokens in the event shop for ascension and skill materials, and pull the new operators from a parallel banner. Token efficiency is highest in the first week. Hoarding Sanity potions and Originite Prime until early October is the cheap play.
Arknights checklist before new operators arrive
The in-game exchange rate to plan around: 600 Orundum per pull, 6,000 for a ten-pull, and 180 Orundum per Originite Prime. A one-ten-pull buffer means 6,000 Orundum plus a few Prime. On the material side stock up on class chips (sniper, caster, guard and so on), ascension materials, skill mastery materials and module blocks.
Arknights Hengyuan Jinliang: how to play a sign-in crossover
Arknights what the crossover actually gives
The official text is specific: event furniture comes from logging in during the event, while the crossover outfits and avatars are sold, not gifted. Secondary articles frequently invert this and claim the outfits are free. They are not.
Arknights should you buy the crossover outfits
Crossover cosmetics return on their own schedule, and not always. The test is simple: will you actually look at this outfit on the squad screen? If yes, buy it. If not, save the Orundum for the Yesterday Sea banner.
Arknights Black Current Tree Sea update one: Integrated Strategies prep
Arknights what the new squads and secrecy levels change
Update one adds a new ending, stages, squads, secrecy levels and life-game nodes (source: Communication #69). Secrecy mechanics usually govern starting class restrictions and collectible quality; new squads tend to specialise around one operator archetype.
Arknights prep priority for Integrated Strategies
| Priority | Operator type | Why |
|---|---|---|
| Highest | Self-sufficient single-lane DPS | New squads restrict class composition, so a single carry covers gaps |
| High | Group healers and area slowers | New endings run longer, and sustain beats burst |
| Medium | Vanguards and fast-redeploy | Short lifespan, decides the first two minutes |
| Low | Niche counter operators | Useful only on specific stages |
Arknights October resource plan
Arknights how to build Orundum
Free-to-play income comes from daily and weekly missions, Annihilation and event rewards. Annihilation's weekly cap is the steadiest piece, do not skip it. Priority for October Orundum: the Yesterday Sea recruitment, then crossover cosmetics, then standard banners.
Arknights Sanity and material stacking order
- Push the Vector Break #3 milestone board to the outfit tier before 20 October 03:59.
- Open Yesterday Sea in early October and spend tokens on the new operator's ascension and mastery materials first.
- Play the Black Current update with existing roster depth; do not rush a new operator for it.
- Treat Vision Museum: Evolution as a collection event in late October.
Arknights October prep: common mistakes and sourcing notes
Arknights three mistakes to avoid this month
First, treating the crossover as a free-outfit event. The official text separates the two: sign-in awards event furniture, while crossover outfits and avatars are sold at launch price. Players who budget zero for cosmetics are fine, but players who assume the outfits arrive for free end up short at the end of the event.
Second, front-loading Sanity into Vector Break #3 because the board looks short. The stage window and the milestone window are not the same length. Stages stop paying tokens on 20 October 03:59, while the board takes exchanges until 23 October 03:59. Any token not farmed by the earlier date simply does not exist, so the last three days are for exchanging, not farming.
Third, pulling for a rumoured limited banner. Communication #69 lists four activities and no recruitment information at all. Everything about limited banners circulating before that notice is unofficial, and spending Orundum on an assumption costs far more than waiting a week for the official notice.
Arknights where these figures come from
The four-event schedule, the crossover reward structure and the Orundum and Sugar Pack mail all trace back to one document: Producer's Communication #69, published on the official Arknights site on 25 September 2026. The Vector Break #3 windows come from the official event notice dated the same day. Exchange-rate figures such as 600 Orundum per pull and 180 per Originite Prime follow standard in-game conversions.
Anything not covered by those two documents is marked as unconfirmed in this guide, which is why no operator names, no banner dates and no material counts for Yesterday Sea appear here. If you want the same facts presented with the Chinese names and the original sources, the GameHub guide hub keeps a copy of this breakdown alongside the rest of the October coverage.
Arknights October FAQ
Q: When does Yesterday Sea start?
A: The official newsletter only says "early October". The exact date is in the official event notice; this guide does not guess.
Q: When does the Vector Break #3 token stop dropping?
A: Stages close 20 October 03:59 and the token stops with them. The milestone board runs three days longer, to 23 October 03:59.
Q: Does Hengyuan Jinliang give free crossover outfits?
A: No. Logging in awards event furniture; the crossover outfits and avatars are sold.
Q: Do I need new operators for the Integrated Strategies update?
A: No. It is permanent-mode content and plays fine with high-utility operators you already built.
Q: Should I save for a limited banner in October?
A: Communication #69 lists no limited recruitment. Treat anything else as unconfirmed until the official notice appears.
Arknights October action list
- Clear the Communication #69 mail today (Orundum ×200, Sugar Pack ×5), 7-day expiry.
- Enter Vector Break #3 on 29 September 16:00 and push the board to the outfit tier.
- Finish token farming before 20 October and keep the three-day exchange window.
- Hold 6,000 Orundum plus Prime for the Yesterday Sea banner.
- Run the mid-October Integrated Strategies update with your existing roster.
Game Guides
- Palworld v1.0.5 Tower Boss Order Guide: Elements, Counters and Squad Choices
Palworld's v1.0.5 patch (2026-09-15) only fixed texture loading, so what actually shapes tower runs is the 1.0 release itself: the boss count expanded from 7 towers in early access to 9, the level curve runs from 10 all the way to 80, and the new Sunreach sky islands and World Tree finale sit at the end of it . Clearing towers is less about raw investment than about picking Pals that exploit each boss's element.
- Reverse: 1999 Version 4.0.0 Second Half Guide: Drake, the October 15 Banner Swap and Free Rewards
Reverse: 1999 has moved into the second half of version 4.0.0, and the banners swap on October 15: Drake arrives as a new standard six-star Beast character, while a pick-your-own rate-up runs with Quniang, Liangyue, Nana, Lucy and Nodica selectable . The first half's limited SP Crossbow banner closes at the same point, so October 15 is a clean dividing line.
- Love and Deepspace Xavier Birthday Guide: Wish Upon This Moment Banner Window
Love and Deepspace's Xavier birthday event is live, and the birthday five-star Memory is obtainable from 2026-10-11 at 05:00 to 2026-10-18 at 04:59 (source: official birthday calendar and birthday Memory announcement, 2026-10-08). The window is only seven days and it is a single-character banner rather than a pooled one, so the budget is easier to plan, provided you count your tickets and diamonds before you start pulling. The single target is the main advantage: there is no risk of boosting the wrong Memory and no need to compare three candidates.
- Honkai: Star Rail 4.6 Planar Fissure Guide: Double Relic Drops and Immersifier Spending
Honkai: Star Rail's 4.6 Planar Fissure event is live, and Planar Ornaments drop double rewards for the duration . The doubled runs are limited and do not reset during the event, so the goal is not farming more but spending the limited runs on the two worlds your roster actually needs.
- Genshin Impact 7.1 Imaginarium Theater Guide: Ice, Hydro and Anemo Stacking
The October 2026 Imaginarium Theater rotation locks the playable elements to Ice, Hydro and Anemo, and its core mechanic grants one stack of Frost Benediction whenever your party triggers Swirl, with each stack adding 80% Swirl damage and 12% crit damage up to 3 stacks . So the rotation is not about raw damage but about Swirl frequency, getting the blessing to full stacks as fast as possible.
- Wuthering Waves 3.7 Tower of Adversity Lineup Guide: Mid Tower Splits and Side Tower Stamina
The Wuthering Waves 3.7 Tower of Adversity refreshed on October 13, and this rotation cuts Havoc resistance on the left tower's fourth floor, which clears the way for Havoc teams. The mid tower remains the hardest part of the cycle, with Sunmoon, Cartethyia and Phrolova squads still carrying it, Zhanfei usable, and Galbrena needing Qiuyuan to reach full shape. If you only need the rewards, the side towers auto-clear and your stamina belongs to the mid tower.
- Zenless Zone Zero 3.2 Shiyu Defense Guide: Three Teams and the October 2 Rotation
Zenless Zone Zero's October 2 Shiyu Defense rotation runs through October 16 and ends in a three-room score check where each room caps at 25,000 points for an S rank and the total reaches 100,000 (source: in-game Shiyu Defense interface plus creator testing, 2026-10-02). If you only want the Polychrome, getting all three rooms to S is enough, because the reward gate is the S rank and not the total.
- Arknights October 9 Update Guide: New Modules, Paradox Simulations and Voucher Timing
Arknights ran a forced maintenance on 2026-10-09 that shipped four free progression tracks at once: 4 operator records, 4 Paradox Simulations, 4 exclusive modules including the second modules for Shou and Ulpianus, plus 5 Originite Prime in compensation . The dates worth writing into a calendar are 10-15 04:00 for the mid-tier headhunting refresh and voucher store update, and 10-16 04:00 for the Security Service reward refresh .