https://github.com/mrdoob/three.js/wiki/Migration-Guide#r175--r176
https://github.com/mrdoob/three.js/milestone/89?closed=1

• Global
  • Remove legacy code. #30821 (@Mugen87)
  • Remove Luminance and LuminanceAlpha format. #30934 (@gkjohnson)
• ArrowHelper
  • Replace cylinder with cone geometry. #30867 (@shlomnissan)
• Animation
  • Fix ReferenceError in non-broswer environment. #30835 (@chirsz-ever)
• Background
  • Make sure background nodes can be disposed of. #30938 (@Mugen87)
• BatchedMesh
  • Fix toJSON(), ObjectLoader integration. #30965 (@gkjohnson)
• CapsuleGeometry
  • Add heightSegments parameter. #30868 (@mkeblx)
  • Change length param to height, fix UVs. #30915 (@mkeblx)
• ExtrudeGeometry
  • Fix regression introduced with last release. #30822 (@mlasala45)
• LightsNode
  • Honor spotlight maps in cache key. #30940 (@Mugen87)
• NodeMaterial
  • Fix alpha of vertex-color. #30974 (@sunag)
• NodeMaterialObserver
  • Force refresh when rendering velocity. #30840 (@Mugen87)
• RenderTarget
  • Fix depth texture assignment regression. #30921 (@Spiri0)
• ShadowNode
  • Inherit camera.layers only if shadow.camera.layers is not set. #30877 (@RenaudRohlinger)
• TSL
  • Don't flip normals when using flat shading. #30823 (@Mugen87, @sunag)
  • Fix frontFacing when using material.flatShading. #30828 (@sunag)
  • Add dFdx and dFdy warnings. #30831 (@sunag)
  • Show shader stage in debug() message. #30833 (@sunag)
  • Fix blur() on Framebuffer. #30845 (@RenaudRohlinger)
  • Fix bitangent* when using material.flatShading. #30837 (@sunag)
  • Fix instance() optional parameter. #30848 (@sunag)
  • Introduce varying.setInterpolation(). #30582 (@cmhhelgeson, @sunag)
  • Fix optional Fn parameters. #30884 (@sunag)
  • Fix texture() matrix sync. #30893 (@sunag)
  • Fix early-z rejection. #30891 (@sunag)
  • Add increment() and decrement() and fix unsual for() expression syntax for transpiler. #30912 (@Mugen87, @sunag)
  • Fix dispose() when using reflector(). #30933 (@Mugen87)
  • Fix and improve bvec operators. #30922 (@sunag)
  • Fix debug() changes the compiled code. #30944 (@sunag)
  • Add switch/case. #30935 (@Mugen87)
  • Add expression support for loop( { update: ... } ). #30947 (@sunag)
  • Add Stack() and .toStack(). #30956 (@sunag)
  • Cache getShadowRenderObjectFunction(). #30969 (@sunag)
  • Fixes the return value of atomic* nodes. #30971 (@sunag)
  • Auto-cache atomic* nodes. #30972 (@sunag)
  • Fix denoise() sampler texture. #30975 (@sunag)
  • Improve debug() callback changing to ( builder, code ) signature. #30976 (@sunag)
• VelocityNode
  • Fix initial value of previous model matrix. #30839 (@Mugen87)
• WebGLRenderer
  • Fix binding __webglFramebuffer when mipmaps are used. #30746 (@haxiomic)
  • Support alphaToCoverage with shadows. #30871 (@Mugen87)
• WebGPURenderer
  • Introduce Shadow Map Array. #30830 (@RenaudRohlinger)
  • Introduce compatibilityMode. #30854, #30869, #30875 (@sunag)
  • Disable draw call when object.count = 0. #30881 (@cmhhelgeson)
  • Make material.transparent behave as in WebGLRenderer. #30862 (@rkreis-v)
  • Add Multiview support. (@cabanier)
  • Introduce renderer.highPrecision. #30970 (@sunag)
• WGSLNodeBuilder
  • Improve isCustomStruct() checking. #30525 (@Spiri0)
• XRManager
  • Request reference space for both layers and non layers. #30902 (@danrossi)

Docs

• Clean up. #30888, #30927, #30978 (@rizzler329842, @notgod6, @arcs-)
• Simplify JSDoc output directory. #30815 (@Mugen87)
• Fix typos and types. #30843, #30874, #30880, #30879 (@s-rigaud)
• Improve SkinningNode. #30852 (@Mugen87)
• JSDoc: Add import section for addons. #30853, #30860 (@Mugen87)
• Improve Chinese translation. #30887 (@linzhou559)

Examples

• Clean up. #30820, #30979 (@Mugen87, @Methuselah96)
• Added additional Rapier physics examples. #30818 (@NikLever)
• Fix AR hit-test. #30866 (@mkeblx)
• Use InstancedMesh in webgl_clipping_advanced. 2cb9218 (@mrdoob)
• Fix WebXR Haptics example when entering VR from Oculus Browser button. #30859 (@arturitu)
• Add external "3d tiles" globe example. #30883, #30907 (@gkjohnson)
• Use post-processing and improve description in reverse depth buffer demo. #30941 (@CodyJasonBennett)
• Add webgpu_caustics example and shadow revisions. #30962 (@sunag)
• Call ImageBitmap.close() in webgl_loader_imagebitmap. #30977 (@Mugen87)

Addons

• Global

  • Fix SSAA/TRAA state reset. #30838 (@Mugen87)
  • Clean up. #30917, #30918, #30953 (@satelllte, @Mugen87)

• AfterImageNode

  • Fix usage of multiple nodes. #30834 (@Makio64)

• GLTFLoader

  • Remove support detection for WebP and AVIF. #30864 (@Mugen87)

• IFFParser

  • Fix missing Debbuger attribute declarations #30946 (@s-rigaud)

• ImprovedNoise

  • Use MathUtils.lerp(). #30905 (@satelllte)

• LottieLoader

  • Deprecated loader, inline library usage. #30896 (@Mugen87)

• MD2CharacterComplex

  • Fix frontDeceleration attribute name. #30817 (@s-rigaud)

• OutlinePass

  • Fix using with BatchedMesh. #30952 (@luigidenora)

• PointerLockControls

  • Constant for mouse sensitivity #30966 (@satelllte)

• RapierPhysics

  • Add heightfield support. #30906 (@andytriboletti)

• RoomEnvironment

  • Use InstancedMesh. df3b15e (@mrdoob)

• TileShadowNode

  • Fix shadow manual update. #30863 (@RenaudRohlinger)

• TSLTranspiler

  • Add valid !=. #30890 (@s-rigaud)
  • Fix typo. 2edea69 (@sunag)

• Water2Mesh

  • Fix missing material.transparent=true. #30892 (@sunag)

Editor

• Fix selection box update when reparenting objects in hierarchy. #30904 (@lixinde)