The 8.0 release brings several API simplifications. Some of them are not backwards compatible, so make sure to read the upgrade notes. The new StadiaMaps source replaces the Stamen source, because Stamen no longer hosts map tiles. Several WebGL improvements are also part of this release. And finally, a new loader API for image layers makes working with non-tiled raster data more modular and faster.

List of all changes

See below for a complete list of features and fixes.

• Revert "Remove lineCap, it is useless on closed paths" (by @MoonE in https://github.com/openlayers/openlayers/pull/15064)
• Updates for the 7.5.2 release (by @openlayers in https://github.com/openlayers/openlayers/pull/15067)
• Support XYM geometry layout in WebGL vector layer (by @jahow in https://github.com/openlayers/openlayers/pull/15063)
• Detect static image loaders by arguments length (by @ahocevar in https://github.com/openlayers/openlayers/pull/15039)
• Add OL STAC example (by @tschaub in https://github.com/openlayers/openlayers/pull/15042)
• Remove ol/style/Icon's imgSize property (by @ahocevar in https://github.com/openlayers/openlayers/pull/15059)
• Remove WebGL helper classes from the API (by @ahocevar in https://github.com/openlayers/openlayers/pull/15061)
• Add OL STAC to 3rd party page (by @tschaub in https://github.com/openlayers/openlayers/pull/15041)
• Fix parameter description (by @fredj in https://github.com/openlayers/openlayers/pull/15050)
• Do not download fonts, use system fonts (by @ahocevar in https://github.com/openlayers/openlayers/pull/15046)
• Remove deprecated ol/AssertionError class (by @fredj in https://github.com/openlayers/openlayers/pull/15047)
• Set correct maxZoom in OSM Vector Tiles example (by @mike-000 in https://github.com/openlayers/openlayers/pull/15044)
• Fix typo in export name (by @ahocevar in https://github.com/openlayers/openlayers/pull/15038)
• Update ol-mapbox-style and use MapboxVectorLayer in test (by @ahocevar in https://github.com/openlayers/openlayers/pull/15037)
• Wait until font loading has finished (by @ahocevar in https://github.com/openlayers/openlayers/pull/15032)
• Allow to set GeoTiff projection (by @tschaub in https://github.com/openlayers/openlayers/pull/15036)
• Remove ol/layer/MapboxVector to avoid a circular dependency (by @ahocevar in https://github.com/openlayers/openlayers/pull/14870)
• Keep declutter tree for hit detection (by @ahocevar in https://github.com/openlayers/openlayers/pull/15028)
• Make BingMaps source 'placeholderTiles' optional (by @adube in https://github.com/openlayers/openlayers/pull/15027)
• Fix various typos (by @luzpaz in https://github.com/openlayers/openlayers/pull/15021)
• Styling with logical operators and type assertions (by @tschaub in https://github.com/openlayers/openlayers/pull/15003)
• Move inlineDynamicImports options to output (by @ahocevar in https://github.com/openlayers/openlayers/pull/15016)
• Release v7.5.1 (by @openlayers in https://github.com/openlayers/openlayers/pull/15017)
• Bump version to 8.0.0-dev (by @tschaub in https://github.com/openlayers/openlayers/pull/15018)
• Fix OGCVectorTile source types (by @MoonE in https://github.com/openlayers/openlayers/pull/15015)
• Use .transform() instead of .setTransform() when rendering image or text (by @mike-000 in https://github.com/openlayers/openlayers/pull/14483)
• Fix word repetition in example descriptions (by @mike-000 in https://github.com/openlayers/openlayers/pull/15012)
• Fix return type of Layer#renderFrame (by @MoonE in https://github.com/openlayers/openlayers/pull/15005)
• WebGL / Rework symbol rendering to include circles with outlines, shapes and icons (by @jahow in https://github.com/openlayers/openlayers/pull/14883)
• Loader based API for image sources using ImageBitmap (by @ahocevar in https://github.com/openlayers/openlayers/pull/14945)
• Fix text placement line hit detection for pixelRatio !== 1 (by @ahocevar in https://github.com/openlayers/openlayers/pull/15001)
• Expression based styling (by @tschaub in https://github.com/openlayers/openlayers/pull/14780)
• Do not override caption-side in featureInfo styles (by @mike-000 in https://github.com/openlayers/openlayers/pull/15002)
• Generate provenance statement when publishing package (by @tschaub in https://github.com/openlayers/openlayers/pull/15000)
• Doc updates (by @tschaub in https://github.com/openlayers/openlayers/pull/14999)
• Improved jsdoc types and docstrings in Base.js (by @oshawa-connection in https://github.com/openlayers/openlayers/pull/14998)
• Add notes on upgrading to StadiaMaps source (by @tschaub in https://github.com/openlayers/openlayers/pull/14997)
• Direct access to object properties (by @tschaub in https://github.com/openlayers/openlayers/pull/14996)
• Reflect that Stamen styles are hosted by Stadia Maps (by @stadiamaps in https://github.com/openlayers/openlayers/pull/14989)
• Updates for the 7.5.0 release (by @openlayers in https://github.com/openlayers/openlayers/pull/14995)

New Contributors

• @ianthetechie made their first contribution in https://github.com/openlayers/openlayers/pull/14989
• @oshawa-connection made their first contribution in https://github.com/openlayers/openlayers/pull/14998
• @luzpaz made their first contribution in https://github.com/openlayers/openlayers/pull/15021

Full Changelog: https://github.com/openlayers/openlayers/compare/v7.5.2...v8.0.0