Marked BaseColor and BaseTexture as main properties to get rid of the error while using regular Material.color property. by @XtroTheArctic in https://github.com/KhronosGroup/UnityGLTF/pull/864
Made Importer create Material with Auto Queue Control. The user can override it if he wants. by @XtroTheArctic in https://github.com/KhronosGroup/UnityGLTF/pull/866
Added the bone names which Unity's FBX importer can detect to the dictionary. by @XtroTheArctic in https://github.com/KhronosGroup/UnityGLTF/pull/862
Improve KHR_interactivity support by @pfcDorn
Improve Sprite mesh exporter by @hybridherbst

Full Changelog:

[2.17.0] - 2025-06-12

add: Quaternion nodes for KHR_interactivity visual scripting export
add: Importing PNG files without alpha channel in the Editor now sets them as RGB instead of RGBA, leading to better compression and less memory usage (#858)
add: Add more bone names to Humanoid import for better compatibility with Unity's FBX importer (#862)
change: Implemented specification changes for KHR_interactivity from May 2025
change: Enabled applyRootMotion for humanoid animator to make it consistent with FBX importer (#868)
fix: Sprite Mesh export threw an exception in non-Simple sprite draw mode. Use Unity 2023.2+ for other sprite modes than "Simple".
fix: Audio plugin did not correctly check for existance of built-in Unity modules
fix: Runtime errors with serialization of editor-only components in some newer Unity versions
fix: Improved performance for extracting all materials from an editor-imported glTF file (#855)
fix: Marked baseColor and baseColorTexture as main color and main map so they work with Unity's Material.color and Material.mainTexture properties (#864)
fix: Use correct Auto queue value for imported materials (#866)

[2.16.1] - 2025-05-20

add: Visual Scripting variables work across multiple scenes now
add: partial KHR_materials_anisotropy roundtrip support. There is no visual support for it yet, but data is imported and exported correctly from PBRGraph.
add: experimental KHR_audio_emitter support. Please note that this extension is not yet ratified and implementation details may change. The plugin is disabled by default, enable it in UnityGLTFSettings.
add: Sprite mesh export support through "Bake to Mesh" plugin.
add: KHR_interactivity plugin now has a button to install the com.unity.visualscripting package
add: visual badges for non-ratified and experimental extension plugins
change: the Export API for KHR_interactivity is still undergoing heavy changes while the extension is being finalized.
change: removed the KHR_audio sample since it's now shipping with this package
fix: generated shader converter code doesn't use obsolete API anymore
fix: various fixes to visual scripting export support through KHR_interactivity
fix: fixed incorrect namespace that led to compilation errors in some specific cases
fix: wrong asset import check for textures, which led to non-compressed textures at runtime (Fixes #846)