v2.6.0

Tencent-Hunyuan/HY-Motion-1.0v2.6.0Aug 27, 2026by Michael-A-Kuykendall

AI Summary

Major overhaul consolidating the certification pipeline into a 3-box regimen and removing legacy engine code to promote v2.2 features to main.

Key Highlights

  • New 3-box certification regimen (MATH, INFERENCE, DETERMINISM)
  • Removal of legacy engines (huggingface, mlx, universal, rustchain_compat)
  • New certified models including llama-3.1-8b, qwen2-7b, and gemma-2-2b
  • Simplified CI/CD by removing legacy references

Breaking Changes

  • engine/huggingface.rs
  • engine/mlx.rs
  • engine/universal.rs
  • src/rustchain_compat.rs
  • docs/rustchain-provider.md

New Features

  • New 3-box certification regimen
  • Legacy engine code removal
  • New supported models

Full Release Notes

## [2.6.0] โ€” 2026-08-26 โ€” Certification Consolidation + Engine Cleanup + v2.2 Promotion

### ๐Ÿ† Certified โ€” 12 Families ยท 26 Model/Quant Combinations

Shimmy's certification pipeline has been **consolidated from the old 5-gate + CHAT regime into a clean 3-box regimen** (MATH + INFERENCE + DETERMINISM), matching the airframe 0.4.0 release. The regression-causing chat box is gone, replaced with deterministic inference verification.

**The 3-box certification regimen:**
1. **MATH** โ€” GPU dequant audit, structural peel, plan-vs-peel reds, numerical self-consistency
2. **INFERENCE** โ€” 5-prompt battery (factual / creative / arithmetic / kv_cache / dev_question) on real GPU
3. **DETERMINISM** โ€” two identical runs must produce identical text

**26 certified model/quant combinations across 12 families** โ€” up from 25 in v2.4.0. New: llama-3.1-8b, qwen2-7b, gemma-2-2b (plus re-certification of all prior models under the new regimen).

### Highlights

- **v2.2 release cleanup promoted to main** โ€” Legacy engine code stripped (huggingface.rs, mlx.rs, universal.rs, rustchain_compat.rs removed โ€” ~1,600 lines deleted). Feature flags cleaned. Shimmy is now a pure Airframe product.
- **CI simplified** โ€” Removed huggingface/mlx/llama references from CI/CD. Faster, cleaner builds.
- **Certification alignment** โ€” Shimmy's cert documentation, README, and supported-models tables now align with airframe's 3-box regimen and 26-model count.

### Removals

- **`engine/huggingface.rs`** (428 lines) โ€” removed
- **`engine/mlx.rs`** (323 lines) โ€” removed
- **`engine/universal.rs`** (573 lines) โ€” removed
- **`src/rustchain_compat.rs`** (306 lines) โ€” removed
- **`docs/rustchain-provider.md`** (40 lines) โ€” removed
- All RustChain provider references scrubbed from docs, .gitignore, lib.rs

### Documentation

- **v2-roadmap.md** added (131 lines) โ€” current roadmap and release planning
- Chinese user manuals updated
- Safetensors release status clarified

### Infrastructure

- **Beads issue tracking initialized** โ€” `.beads/` Dolt-backed board for durable task tracking
- **Cargo.lock refreshed** for path-sourced airframe patch

### Commits
18 commits since v2.5.0 โ€” see git log `v2.5.0..HEAD` for full list.