---
id: 9569
title: 'Epic: Neo.mjs v12.1 Release Notes'
state: OPEN
labels:
  - documentation
  - epic
  - ai
assignees:
  - tobiu
createdAt: '2026-03-27T10:31:17Z'
updatedAt: '2026-03-27T10:59:05Z'
githubUrl: 'https://github.com/neomjs/neo/issues/9569'
author: tobiu
commentsCount: 0
parentIssue: null
subIssues:
  - '[x] 9570 Draft Release Notes: TreeGrid & Data Pipeline Architecture'
  - '[x] 9571 Draft Release Notes: Locked Columns & Value Banding'
  - '[x] 9572 Draft Release Notes: ScrollSync & Performance'
  - '[x] 9573 Draft Release Notes: Learning Guides & Minor Features'
  - '[x] 9574 Draft Release Notes: Generate Full Changelog'
  - '[x] 9575 Draft Release Notes: Gather Visual Assets'
  - '[x] 9576 Draft Release Notes: MCP Infrastructure & Security'
  - '[x] 9577 Draft Release Notes: Storytelling & Narrative Arc'
subIssuesCompleted: 8
subIssuesTotal: 8
blockedBy: []
blocking: []
---
# Epic: Neo.mjs v12.1 Release Notes

This epic tracks the creation of the **Neo.mjs v12.1 release notes**. v12.1 encompasses **178 resolved tickets** (excluding stale/invalid items), featuring major structural upgrades to the Grid and Data layers.

### Proposed Sub-Tasks
- [ ] **Task 1: Draft TreeGrid & Data Pipeline Architecture Section** (Focuses on `TreeStore`, `normalizer`, and full CRUD hierarchical data mutations).
- [ ] **Task 2: Draft ScrollSync, Locked Columns & Grid Performance Section** (Focuses on mobile/desktop 2-way binding, optical pinning, and mathematical column layouts).
- [ ] **Task 3: Draft Core Engine Learning Guides Section & Minor Features** (Highlights the new workshop guides and smaller enhancements).
- [ ] **Task 4: Compilation, Proofreading, and Publication** (Generating the final markdown file with the full changelog).

## Timeline

- 2026-03-27T10:31:18Z @tobiu added the `documentation` label
- 2026-03-27T10:31:19Z @tobiu added the `epic` label
- 2026-03-27T10:31:19Z @tobiu added the `ai` label
- 2026-03-27T10:34:30Z @tobiu cross-referenced by #9570
- 2026-03-27T10:37:07Z @tobiu added sub-issue #9570
- 2026-03-27T10:37:36Z @tobiu cross-referenced by #9571
- 2026-03-27T10:37:53Z @tobiu added sub-issue #9571
- 2026-03-27T10:39:46Z @tobiu cross-referenced by #9572
- 2026-03-27T10:40:09Z @tobiu added sub-issue #9572
- 2026-03-27T10:40:13Z @tobiu cross-referenced by #9573
- 2026-03-27T10:42:35Z @tobiu added sub-issue #9573
- 2026-03-27T10:44:40Z @tobiu cross-referenced by #9574
- 2026-03-27T10:44:41Z @tobiu cross-referenced by #9575
- 2026-03-27T10:44:51Z @tobiu added sub-issue #9574
- 2026-03-27T10:44:52Z @tobiu added sub-issue #9575
- 2026-03-27T10:58:38Z @tobiu cross-referenced by #9576
- 2026-03-27T10:58:53Z @tobiu added sub-issue #9576
- 2026-03-27T10:59:05Z @tobiu assigned to @tobiu
- 2026-03-27T11:15:12Z @tobiu added sub-issue #9577

