Release notes
What's new in the ecosystem.
Release notes and milestone streams for every product — every version, every known error, every warning. Download published builds from each product's page.
30 releases 21 warnings 7 known errors
2.1 2026-06-30 Release Latest
Hunt-and-devour AI
- Creepers hunt and devour instead of exploding
- Mainline release for 1.20.1 and 1.21.1 – 1.21.11
26.x builds ship as v1.1
Ultra Hard is a separate product with its own builds
2.1 2026-07-17 Release Latest
Ultra Hard 2.1
- Devour attack instead of explosion — no block damage
- 1.3x chase AI that tracks through walls up to 15 blocks
- Fizzle-on-miss when the devour is dodged
- Difficulty forced to Hard/Hardcore
- Doubled creeper spawns; spawning now happens cross-dimension and during the day
Do not mix Ultra Hard builds with standard Creeper Eater files
2.0 2026-06-30 Release
Ultra Hard — released
- Standalone hardcore variant of Creeper Eater
- Relentless hunt AI and hardcore enforcement
- uhceu builds for 1.21.1 – 1.21.11 and 26.x
Do not mix Ultra Hard builds with standard Creeper Eater files
1.1.0 2026-07-01 Release Latest
Cyan neon theme
- Cyan neon GUI theme
- 1.8.9 and 1.20.3–26.2 builds
1.1.0 2026-07-01 Release Latest
Gold neon theme
- Gold neon GUI theme
- 1.8.9 and 1.20.3–26.2 builds
1.1.0 2026-07-01 Release Latest
Green neon theme
- Green neon GUI theme
- 1.8.9 and 1.20.3–26.2 builds
1.1.0 2026-07-01 Release Latest
Lime neon theme
- Lime neon GUI theme
- 1.8.9 and 1.20.3–26.2 builds
1.1.0 2026-07-01 Release Latest
Magenta neon theme
- Magenta neon GUI theme
- 1.8.9 and 1.20.3–26.2 builds
1.1.0 2026-07-01 Release Latest
Orange neon theme
- Orange neon GUI theme
- 1.8.9 and 1.20.3–26.2 builds
1.1.0 2026-07-01 Release Latest
Pink neon theme
- Pink neon GUI theme
- 1.8.9 and 1.20.3–26.2 builds
1.1.0 2026-07-01 Release Latest
Expanded colour family
- Purple neon GUI theme
- 1.8.9 and 1.20.3–26.2 builds
- OptiFine shader support
1.1.0 2026-07-01 Release Latest
Red neon theme
- Red neon GUI theme
- 1.8.9 and 1.20.3–26.2 builds
1.1.0 2026-07-01 Release Latest
Yellow neon theme
- Yellow neon GUI theme
- 1.8.9 and 1.20.3-26.2 builds
1.4.0 2026-08-01 Release Latest
Reconciliation & rollback refinements
- Expanded version matrix to 1.21.11 and 26.x
- Improved rollback precision
- Developer API additions
26.x builds use bundled mappings and are experimental
Check server rules — some communities restrict predictive clients
1.3.2 2026-06-12 Release
Stability pass
- Fixed rollback edge cases on high-latency servers
- Reduced per-tick cost
Fixed: crash when unloading a chunk during a pending rollback
3.2.1 2026-08-06 Release Latest
Bridge the gap
- 161 Bedrock mechanics across 13 phases
- RakNet client for joining Bedrock servers
- 12-version build matrix (1.21–1.21.11)
Online Bedrock auth is still being verified against real servers
26.x builds are blocked upstream (no mappings)
1.9.1 2026-07-20 Release Latest
GUI & export refinements
- Expanded version matrix to 1.21.11 and 26.x
- Conflict scanner improvements
- Headless /packmerge command suite
26.x builds are experimental
Fixed: exported packs could carry stale pack_format on some versions
r1.2 2026-07-10 Release Latest
Markdown engine + libraries
- Live-preview Markdown editor
- Libraries, search, themes, export
- Multiplayer sync
1.1.0 2026-06-15 Release Latest
Flood-fill engine
- Unlimited vein mining via non-recursive BFS
- 12-version matrix
1.1.0 2026-08-02 Beta Latest
Context-aware crosshair
- Context color coding + tooltips
- Combat glow indicators
- Public API
Currently a single Fabric 1.21.11 build — multi-loader matrix in progress
2.2 2026-10-01 Beta Latest
Phase 1 — multi-version + full GUI
- Per-version builds published for Minecraft 1.21 through 1.21.11 (26.x builds in progress)
- Full GUI: mod menu, settings screen, HUD editor and keybind editor
- QoL pass: smooth zoom (2x/4x/8x scroll levels), animated freelook, fullbright modes, dynamic crosshair, waypoint colours
- Accessibility: six features wired into the mod, settings screen, colour-blind filter in the overlay
- Phase 1: command framework, config validators, performance engine
- Build tooling: build-all-versions.ps1, test-all-versions.ps1, deploy-downloads.ps1
- Loom 1.13.6 + Gradle 8.14.3 stable build; CLIENT_PERFECTION_PLAN.md
- Feature catalog mirrored onto the website from FeatureRegistry (127 features, 16 categories)
Requires Java 21 for 1.21.x, Java 25 for 26.x
Fixed: UpdateInfo reporting
2.1 2026-09-28 Release
Stabilisation and launch fix
- Released for Minecraft 1.21.11
- Fixed launch crash: glGetString with no GL context crashed the client on every launch
- Fixed mixin crash: MouseClickMixin never applied — startUseItem returns void
- Wired module-ai into the Gradle reactor
- Fixed timing-dependent managerGetHealth test (0 ms is valid uptime)
Requires Java 21 — the mod's fabric.mod.json enforces it; older JREs fail silently
Fixed: client crashed on every launch before the OpenGL context existed
dev 2026-09-06 In development
Milestone stream — M2/M5 and hero-client-web
- M2: PerformanceManager presets, FrameTimeMonitor (avg/min/max/1% low), PerformanceDiagnostics, AdaptiveQualityEngine, context overrides
- M5: Screenshot Studio and Replay Studio — real disk export, gallery rename/delete/export
- hero-client-web (Spring Boot support site) restored and stabilised
Development milestones — no tagged release artefacts
Fixed: H2 database lock crash on startup (AUTO_SERVER enabled)
0.9.0 Beta Latest
Browser hub beta
- Seeded worlds with per-world save slots
- Inventory, crafting and 21 recipes
- 11 missions with rewards
- Mobs: pig, sheep, zombie, creeper
- Health, hunger, food and respawn
- Caves, coal ore and iron ore underground
- Working furnaces, chests and beds
- Creative mode and a command console
- Day/night, fog, ambient occlusion and particles
- Synthesised sound with a volume control
- Same-machine co-op
2.1 2026-07-25 Beta Latest
Engine milestones M0–M9
- HGFX with OpenGL + Vulkan backends
- Frame graph + chunk renderer
- Adaptive quality, LOD, 26.x support
Beta engine — for testing and feedback
1.0.0 2026-07-31 Release Latest
Initial production release candidate
- Recorder, timeline, diagnostics and command suite
- 15-version build matrix
Best-tested on 1.21.11 — some advertised versions lack full compat code
26.2 build uses the latest mapping bridge
Known: automated run-tests exit with a non-zero code on 26.2 (no mixin errors reported)
1.0 2026-07-05 Alpha Latest
Early alpha
- Universal entity capture/release with full NBT preservation
- 16-version matrix
- No Fabric API required
Early alpha — back up worlds before extensive use
Players are never captured
Known: villager data loss edge case when captured mid-trade
1.0.0 2026-07-04 In development Latest
Internal milestone — v1.0.0 build
- AI chat with six models
- Build planner, redstone engineer, knowledge search
- Cross-platform builds (Windows/macOS/Linux/Android) — internal alpha
Not publicly released — access via the developer portal
alpha 2026-05-15 In development Latest
Model router + agents
- Model router online
- Specialist agent suite
Internal backbone — public access with the developer portal
Phase 1 2026-06-20 In development Latest
Kernel core
- Paging, heap, GDT/TSS, IDT, PIC/PIT
- 10 self-tests passing
- Boots to a boot banner
No public builds yet — development milestone