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 ---
 description: "Full version history of the supervision Python library — release notes, breaking changes, new features, and deprecations for every version."
-date_modified: 2026-04-23
+date_modified: 2026-04-30
 ---
 
 # Changelog
 
+### UnReleased
+
+-
+
 ### 0.28.0 <small>Apr 30, 2026</small>
 
 - Added [#2159](https://github.com/roboflow/supervision/pull/2159): [`sv.CompactMask`](https://supervision.roboflow.com/latest/detection/compact_mask/#supervision.detection.compact_mask.CompactMask) for memory-efficient mask storage. Masks are stored as crop-region bounding boxes plus RLE-encoded data instead of full-resolution bitmaps, reducing memory by up to 240× for sparse masks. Integrates transparently with `sv.Detections.mask` — filtering, merging, and `area` all work without materialising the full array.