ATM10 8.4 Changelog: All The Mods 10 Latest Updates 2026

Your CurseForge app offers ATM10 8.4, and before you click update you want to know what changed, which NeoForge version it needs and whether your server can follow. This page answers that from the pack's own release notes, files and repository, checked on 31 October and 1 November 2026, and lists the release dates of every major ATM10 version.

Quick answer: The latest ATM10 version is 8.4, uploaded to CurseForge on 29 October 2026 at 23:24 UTC for Minecraft 1.21.1 on NeoForge 21.1.265. It adds one resource pack, Neo Vitae: BloodBorn, and fixes structure generation for Astral Sorcery and Twilight Forest, recipe conflicts, missing silver processing recipes and several quest translations. The 8.4 server files, ServerFiles-8.4.zip, appeared under Additional Files on 1 November 2026, so a server can move to 8.4 now. Update the server and every player together, and delete the server's libraries folder so the new NeoForge installs.

ATM10 Latest Version: 8.4 and 8.3 Side by Side

Both versions stay on Minecraft 1.21.1, like all 147 ATM10 files on CurseForge. The Java requirement stays where it was: the pack team's Java guide lists Java 21 for Minecraft 1.21 and newer, and the 8.4 start script stops with "Minecraft 1.21 requires Java 21" when it finds an older Java. Our ATM10 Java guide covers installing and selecting it.

What Changed in ATM10 8.4

The changelog on the 8.4 file page is short. Grouped by what it means for you:

• Added: Neo Vitae: BloodBorn, a resource pack that its own page describes as "The original Blood Magic look, on Neo Vitae for 1.21.1+". It changes how Neo Vitae looks, not how it plays.
• Structure generation: the fix "on AS and TF" means Astral Sorcery and Twilight Forest. 8.4 ships a new config for the Overlapless mod, config/overlapless-common.toml, that lists four Twilight Forest structures (Final Castle, Hollow Tree, Troll Cave and Lich Tower) and seven Astral Sorcery structures as ones that "will always generate even if there are existing structures that occupy the chunk sections." 8.3 shipped no such file. Structures are placed when chunks are first generated, so the fix helps in areas nobody has explored yet; terrain that already exists stays as it is.
• Recipes and tags: recipe conflicts removed, missing silver processing recipes fixed, and a new tag so cheese from the Moon can be used in cooking.
• Quests and languages: a complete French quest translation, updated Brazilian Portuguese texts, a rework of the Neo Vitae quests, updated Turkish quest translations, fixed arrow textures in the Industrial Foregoing quests, obsolete dirt text removed from the Teleposer quest translations, and in-game announcements updated to match recent changes.
• Loader: NeoForge moves from 21.1.259 to 21.1.265. That matters most for servers; see the update steps below.

Some changes are not in the changelog. Comparing the two client manifests, 65 projects point to newer files in 8.4. The manifest also drops the CC Tweaked Compat project, and the pack now carries cc-tweaked-1.21.1-forge-1.120.2.jar in its own files, a jar with the same name as one already in the 8.3 server files. In the server files, 62 of the 469 mod jars are newer versions than in 8.3. With that many updated mods, test the update on a copy of your world before your players join.

The known issues are the same as in 8.3. If Draconic Evolution items are invisible, enable the built-in resource pack "Draconic 2D" or turn off "hud_batching" in the ImmediatelyFast config. If you crash when you use an Ars Lectern, break it and place it again. Like every recent release note, this one ends with "ALWAYS REMEMBER TO BACKUP BEFORE UPDATING".

What Changed in ATM10 8.3

The 8.3 notes were mostly about new mods:

• Added: Astral Sorcery, a magic mod that uses the power of stars and constellations; ATM: Compat, which adds compatibility between ATM mods and other mods; Refined Fluid Substitution, which lets Refined Storage use fluids directly in patterns instead of buckets; and Refined Wireless Upgrades, which extends the Refined Storage Wireless Grid with features such as automatic inventory transfers and item collection. The manifest also brought in ObserverLib, a library mod.
• Removed: Rainbows, a mod that added rainbows to the world.
• Loader: NeoForge 21.1.259, up from 21.1.251 in 8.2.
• Other fixes: the CurseForge notes leave this part as "TBD", but the pack's commits from 15 October fill it in. Among other things, all silver processing recipes added by Mekanism: More Machine were disabled, an Ice and Fire pile duplication through Building Gadgets 2 was mitigated, the MI Replicator was hidden from JEI, and the pack gained a Create addon quest, Turkish quest translation work and a fix for the rabbit food tag.

The 8.3 notes also repeat the line "Ad Astra was added without any changes, we will add quests and do some changes later". That line arrived with 8.1, which added Ad Astra on 29 August 2026, so it is not new in 8.3.

In numbers, 8.3 grew the client manifest from 495 to 499 projects and moved 100 projects to newer files. Its server files hold 469 mod jars.

ATM10 Release Dates

The oldest file on the ATM10 files tab is version 0.32, from 13 August 2024, and 1.0 followed on 13 October 2024. Each major version since then first appeared on these dates (upload time in UTC):

The 8.x line so far:

Since 8.0, a new version has landed every 14 to 24 days. The pack's CHANGELOG.md on GitHub gives the 8.x versions the same dates.

ATM10 8.4 Server Files: What Server Owners Should Know

ServerFiles-8.4.zip (1,256,676,660 bytes, about 1.26 GB) appeared under Additional Files on the 8.4 file page on 1 November 2026. At our check on 31 October 2026 at 15:19 UTC that list was still empty, while for 7.3 through 8.3 the server pack showed up 3 to 12 minutes after the client pack. The pack team's server guide builds every install and every manual update on these server files, so do not build an 8.4 server from the client pack: the client manifest lists 499 projects, the server files hold 469 mod jars, and the pack team decides which ones a server needs. What we found in the archive on 1 November 2026:

1. Only the loader changes in the start scripts. startserver.sh and startserver.bat set NeoForge 21.1.265 instead of 21.1.259 and are otherwise the same as in 8.3. The archive includes neoforge-21.1.265-installer.jar.
2. The memory settings stay. user_jvm_args.txt is the same file as in 8.3, with -Xms4G -Xmx8G.
3. 469 mod jars, as in 8.3. 62 of them are newer versions of mods that were already in 8.3.
4. Server and players must match. ATM10 includes Better Compatibility Checker, whose config names the pack version: "8.4" in the 8.4 server files and client, "8.3" in 8.3. The mod compares that version with the server's and shows a tick in the multiplayer list when they match and an X when they do not, so update the server and every player at the same time. In the CurseForge app, open My Modpacks, hover over ATM10, click the small arrows button next to Play, choose 8.4 from the version list and click Continue. CurseForge warns that custom changes to a pack's content are overwritten when you change versions, unless you tick "Update to a separate modpack profile".
5. Watch the files page. The repository already has a commit dated 31 October ("temp fix rock crystal seeds"), so check whether a newer file has replaced 8.4 by the time you update.

How to Update an ATM10 Server to 8.4

With the 8.4 server files out, follow the manual method from the pack team's guide. Because NeoForge changes in 8.4, step 4 is not optional.

1. Stop the server. Back up the world and every config and kubejs file you changed. The pack team's backup guide says to back up only the config files you changed, never the whole folder, because configs from a different pack version can corrupt the install.
2. Download the 8.4 server files from Additional Files on the 8.4 file page.
3. Delete the mods, config, defaultconfigs and kubejs folders on the server.
4. Delete the libraries folder too, and copy in the new startserver.sh (or startserver.bat) and neoforge-21.1.265-installer.jar from the archive. In the 8.4 start script, as in 8.3, the NeoForge installer only runs when there is no libraries folder, so a leftover folder keeps the new loader from being installed.
5. Extract mods, config, defaultconfigs and kubejs from the new server files, then put back your own config and kubejs changes one file at a time.
6. Check user_jvm_args.txt. The 8.4 server files set -Xms4G -Xmx8G, the same as 8.3, so the Java heap stops at 8 GB however much RAM the plan has. On a bigger plan, raise -Xmx and leave a couple of GB free for Java itself.
7. Start the server, read the log, and join with one 8.4 client before you invite everyone.

The guide's second method, a fresh folder with your world, local, server.properties and eula.txt copied in, is in our ATM10 update guide along with common update errors. Our ATM10 server files guide explains the difference between the client pack and the server pack.

Installing ATM10 8.4 on Our Hosting

On our ATM10 hosting you can install ATM10 with the modpack installer in the panel or upload ServerFiles-8.4.zip over SFTP, and you pick Java 21 in the panel's Startup tab. Whichever route you take, check the version number before the first start, because a new pack release does not reach every installer at the same moment. If your group plays from Asia or Oceania, our Singapore and Australia guides compare locations.

FAQ

What is the latest ATM10 version? ATM10 8.4, uploaded on 29 October 2026 for Minecraft 1.21.1 with NeoForge 21.1.265. Its server files, ServerFiles-8.4.zip, followed on 1 November 2026.

Are there ATM10 8.4 server files? Yes. ServerFiles-8.4.zip appeared under Additional Files on the 8.4 file page on 1 November 2026, after none were listed at our check on 31 October 2026 at 15:19 UTC. It installs NeoForge 21.1.265 and holds 469 mod jars.

When did ATM10 come out? The oldest ATM10 file on CurseForge, version 0.32, is from 13 August 2024, and 1.0 came out on 13 October 2024. Every release since then has been for Minecraft 1.21.1 on NeoForge.

How many mods are in ATM10? The pack's CurseForge summary says "around 500 mods". The 8.4 client manifest lists 499 CurseForge projects, one of them the BloodBorn resource pack, plus one jar bundled in the pack itself. The 8.4 server files hold 469 mod jars, the same number as 8.3.

Which NeoForge version does ATM10 use? 8.4 uses NeoForge 21.1.265, 8.3 uses 21.1.259 and 8.2 used 21.1.251. The server's startserver.sh names the version at the top and installs it when there is no libraries folder yet.

Where can I read the ATM10 changelog and patch notes? On each version's file page on CurseForge, in the changelog section. The pack's GitHub repository lists the versions since 2.26 (January 2025) with their dates in CHANGELOG.md, and its commit history shows each individual change.

Sources

All opened on 31 October 2026, the 8.4 server files on 1 November 2026:

• CurseForge, All the Mods 10: project page, files tab, and the file pages with their changelogs and additional files for 8.4, 8.3, 8.2, 8.1, 8.0 and 7.3; inside the 8.2, 8.3 and 8.4 client packs manifest.json and overrides/config, inside ServerFiles-8.3.zip and ServerFiles-8.4.zip startserver.sh, startserver.bat, user_jvm_args.txt, config/bcc-common.toml and the mods folder
• CurseForge project pages: Neo Vitae: BloodBorn, CC Tweaked Compat, Astral Sorcery, ATM: Compat, Refined Fluid Substitution, Refined Wireless Upgrades, ObserverLib, Rainbows
• GitHub, AllTheMods/ATM-10: commits, CHANGELOG.md, the structure generation fix and config/overlapless-common.toml
• All The Mods guides: Server, Backups, Java
• CurseForge Support: How to Update/Change a Modpack's Version
• Modrinth: Better Compatibility Checker