# MapLibre GL JS v6.2.0

- Product: MapLibre GL JS (https://whatsnew.fyi/product/maplibre-gl-js)
- Vendor: MapLibre
- Date: 2026-08-06
- Version: v6.2.0
- Original notes: https://github.com/maplibre/maplibre-gl-js/releases/tag/v6.2.0
- Permalink: https://whatsnew.fyi/product/maplibre-gl-js/releases/v6.2.0

What's New is an index, not a publisher: every entry below links to the vendor's own release notes, which are the authoritative source. Entries are labelled where they are hand-curated sample data, pre-releases, or drawn from a secondary source such as a developer blog.

Reuse: the summaries, labels and curation here are © What's New. Quote freely with attribution and a link back; wholesale republication of the corpus is not permitted — terms: https://whatsnew.fyi/terms. The vendors' own release notes remain their publishers'.

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- **added** — Add the fill-extrusion-rounded-corner-distance layout property, which replaces each fill-extrusion corner with an arc spanning the given distance in meters along the adjacent edges, clamped to 20% of each adjacent edge's length and leaving near-straight corners untouched
- **changed** — Improve Mercator rendering performance by skipping a redundant clipping mask border pass
- **added** — Add a docker-compose service to build and serve the examples
- **fixed** — Fix rare rendering bug causing two adjacent layers with different data driven property set to render wrong
- **changed** — Improve terrain elevation sampling performance by caching DEM tile lookups and coordinate transforms within each render

###### ✨ Features and improvements

- Add the `fill-extrusion-rounded-corner-distance` layout property, which replaces each fill-extrusion corner with an arc spanning the given distance (in meters) along the adjacent edges. The distance is clamped to 20% of each adjacent edge's length so that short edges don't collapse, and near-straight corners (turns below 5°) are left untouched. Defaults to `0`, which keeps corners sharp ([#7934](https://github.com/maplibre/maplibre-gl-js/issues/7934)) (by [@CommanderStorm](https://github.com/CommanderStorm))
- Improve Mercator rendering performance by skipping a redundant clipping mask border pass ([#8038](https://github.com/maplibre/maplibre-gl-js/pull/8038)) (by [@DoFabien](https://github.com/DoFabien))
- Add a docker-compose service to build and serve the examples (#57) ([#8026](https://github.com/maplibre/maplibre-gl-js/pull/8026)) (by [@clement-igonet](https://github.com/clement-igonet))

###### 🐞 Bug fixes

- Fix rare rendering bug causing two adjacent layers with different data driven property set to render wrong ([#8068](https://github.com/maplibre/maplibre-gl-js/pull/8068)) (by [@CommanderStorm](https://github.com/CommanderStorm))
- Improve terrain elevation sampling performance by caching DEM tile lookups and coordinate transforms within each render ([#8025](https://github.com/maplibre/maplibre-gl-js/pull/8025)) (by [@DoFabien](https://github.com/DoFabien))