@@ -1,12 +1,48 @@
 # Changelog
 
-## Unreleased
+## 1.3.0 - 2026-08-23
+
+- `audio.stream_encode()` reuses a process-local persistent stream pool when `interval` is 0, so repeated TTS-style calls do not open a new WebSocket each time.
+- Streaming encode now sends and receives on one thread so live first-window output cannot race the upload.
+- Added `audio.open_stream_pool()` for thread-safe persistent streaming encode connections.
+- Stream pools use stable opaque connection slots, reuse connections across operations, and close with `pool.close()` or `client.close()`.
+- Before an operation sends input, the pool probes and replaces stale connections. Operations are never replayed automatically after input starts.
+
+## 1.2.1 - 2026-08-18
+
+- Exposed OneFile encode persistence and preflight flags that the product API already accepts: `save_file`, `keep_original`, `check_watermark`, `response_format`, and `original_filename`.
+- Exposed decode `save_file` instead of hard-coding it.
+- Defaults stay compatible with previous SDK behavior (`save_file=True`, `check_watermark=True`).
+- `smooth` is the same product option on file encode and streaming encode.
+- Added `audio.stream_encode()` for low-latency file encode. Media decode and rebuild libraries install with the SDK.
+- `stream_encode()` accepts the previous no-storage flags (`save_file`, `keep_original`, `check_watermark`, `response_format`) and only allows the non-persisting values.
+
+## 1.2.0 - 2026-07-31
+
+- Standard tokens no longer allow new private notebooks; existing private notebooks remain grandfathered.
+- Limited Pro tokens to five private notebooks and Enterprise tokens to ten.
+- Pro token creation now requires an explicit `public_key`.
+- Added permanent account capacity from acquired tokens: 1 GiB for Standard, 6 GiB for Pro, and 11 GiB for Enterprise.
+- Added token-level version-control and storage auto-expansion overrides, effective-setting fields, and permanent-capacity fields.
+- Preserved omitted, `None`, `False`, and `True` distinctly when creating or updating token settings: omission leaves an update unchanged, `None` selects inheritance, and booleans explicitly disable or enable a setting.
+- Documented whole-GiB allocation, immediate first-allocation charging, monthly renewal, successful-charge non-refund, payment-required restrictions, and the 24-hour unpaid reduction window.
+- Updated `notebooks.get()` to return the current notebook revision and ordered media projection.
+- Added revision-safe notebook save sessions: begin one session, stage multiple files with its `save_session_id`, inspect session or upload status, then cancel or commit the session.
+- Changed existing-notebook `update`, `upload_media`, and `delete_media` helpers to read the authoritative complete projection and commit through one atomic save session; `delete_media` now requires the owning `note_id` so only the selected attachment is removed.
+- Added UUID `save_batch_id` support for grouping independent notebook commits.
+- Added typed save-session, staged-upload, cancellation, and commit results, plus typed notebook conflict, payment, validation, rate-limit, and availability exceptions.
+- Raised notebook current media capacity to 500 files while preserving the 100 MiB per-file and 10 MiB UTF-8 text limits.
+- Notebook media now accepts detected image, audio, and video content; SVG and unsupported bytes are rejected.
+- Added stable notebook error codes for media validation, revision, save-session and idempotency conflicts, payment-required capacity, version-rate limits, and temporary unavailability.
+- Documented full-snapshot version behavior and the 60-version-per-notebook rolling-hour and 500-version-per-account UTC-day limits.
+- Owner history remains Web-only; SDK `1.2.0` does not provide history list, download, restore, or delete methods.
+- Clarified that version history is not an independent file-backup service.
 
 ## 1.1.6
 
-- Added notebook media limits of 10 files, 100 MB per file, and 10 GB total.
+- Documented the notebook media upload constraints available in that release.
 - Added SDK methods to list and create reusable AI authorization tags.
-- Normalized unlimited private notebook limits to `None` in public SDK token models.
+- Normalized legacy private notebook-limit responses in public SDK token models.
 
 ## 1.1.4