Mapbox GL JS v3 enables the Mapbox Standard Style, a new realistic 3D lighting system, building shadows and many other visual enhancements, and an ergonomic API for using a new kind of rich, evolving, configurable map styles and seamless integration with custom data. You can get more information about the new features in the Mapbox GL JS v3 migration guide. Changes since v3.0.0-beta.2:

✨ Features and improvements

• ⚠️ Breaking: drop support for WebGL 1. WebGL 2 support is now required to use GL JS v3 (thankfully it is now universally supported across browsers).
• Add support for fading out 3D layers in the distance with fill-extrusion-cutoff-fade-range and model-cutoff-fade-range style properties.
• Add support for controlling the vertical fog range with vertical-range style property.
• Add support for elevating symbols over buildings & other 3D layers with symbol-z-elevate style property.
• Improve rendering performance of the new 3D features (shadows, models and the new lighting model).

Bug fixes 🐞

• Fix issues with light transitions when using map setLights or setConfigProperty.
• Fix issues with shadows popping in abruptly when moving the map.
• Fix a bug with horizon rendering on Windows/NVidia.
• Fix map transformRequest option not being applied to model URLs.
• Fix an edge case when rendering ground flood effect on very large buildings.
• Fix an issue that could cause GL_INVALID_OPERATION: Vertex buffer is not big enough for the draw call warnings in certain map views.
• Fix an issue with rendering of mipmapped non-square textures on models.
• Fix an issue with light-dependent expressions not being re-evaluated on features without IDs.
• Fix visibility not being re-evaluated when using setConfigProperty.
• Fix various issues when calling setStyle on a map with style imports.
• Accessibility fixes: remove tabindex when the map is not interactive; remove role="list" from the attribution control; add role="img" to markers (h/t @kumiko-haraguchi and @aviroopjana).
• Fix an issue with styles not inheriting transition options from imports.
• Fix an issue where an error loading Draco decompression library from CDN wasn't handled gracefully.