# YazSes v2.9.0-dev.2 — Wave M continues (developer preview)

**Pre-release · not published** (publish workflows are pinned to `v0.x`/`v1.x`; v2 dev tags do
not ship). **v1.4.1 remains the stable release.** Every feature is **OFF by default**.

Continues **Wave M** (`design/vision/v2-research/15-wave-m.md`) with the text-intelligence pair:

## New since dev.1 (all off by default)

- **Semantic Line Breaks** (ADR-v2-111, `[sembr]`) — breaks dictated prose *one clause per source
  line* (after sentence terminators, `;`/`:`, and comma-led clause words) so git diffs and merges
  stay clean — the rendered output is unchanged. `semantic_breaks(text, max_len)` with optional
  soft-wrap. For anyone versioning prose in git. Anchor: Semantic Line Breaks Spec; ventilated prose.
- **Acronym & Glossary Manager** (ADR-v2-114, `[acronyms]`) — expands an acronym on first mention
  ("World Health Organization (WHO)"), contracts it after, and warns about acronyms you never
  defined. `AcronymState` (observe/define/resolve/audit) using a simplified Schwartz-Hearst matcher
  that handles skip-words (FBI ← "Federal Bureau **of** Investigation") and strips a leading "The".
  Anchor: technical-style first-use convention; LaTeX glossaries/acro.

`yazses features` now lists **119 capabilities**.

## Wave M remaining
Diagrams-as-Code · Interruptible Read-Back Proofreading · Style-Consistency Enforcer · Screenplay
Auto-Format · Spoken Spaced-Repetition Capture · Suggestion-Mode Dictation.

## Quality
1386 tests green across Linux × macOS × Windows on Python 3.11 and 3.12. Both new cores are
unit-tested to 100% with **no new dependency**; this drop also refined the acronym matcher from a
greedy regex to Schwartz-Hearst after the tests caught over-capture. The default install and the v1
dictation path are unchanged.