https://github.com/mrdoob/three.js/wiki/Migration-Guide#r121--r122 https://github.com/mrdoob/three.js/milestone/35?closed=1

Source

• Global
  • More usage of ES6 default parameters. #20472 (@linbingquan)
• AnimationObjectGroup
  • Fix .uncache() when used with a single object. #20556 (@Mugen87)
• Audio
  • Copy filters array in .setFilters(). #20105 (@takahirox)
• Camera
  • Properly update world matrix prior to use. #20224 (@WestLangley)
• CubeCamera
  • Moved .clear() to WebGLCubeRenderTarget. #20565 (@mrdoob)
• CubeTexture
  • Clarify envMap flip. #20490 (@Mugen87)
• MaterialLoader
  • Make .parse() more robust. #20534 (@Mugen87)
• Object3D
  • Add clear(). #20478, 315d0fc94b054ef8fc98497d6c71e61b9c9a3715 (@Mugen87, @bianyunzhi95, @mrdoob)
• RectAreaLight
  • Add half float support. #20477 (@yellowtailfan)
• VideoTexture
  • Fix clone() in context of requestVideoFrameCallback(). #20449 (@ianpurvis)
• WebGLGeometries
  • Fix memory leak when disposing of Geometry. #20479 (@Mugen87)
• WebGLCubeMaps
  • Support Texture.dispose(). #20439 (@Mugen87)
• WebGLRenderer
  • Traverse only visible lights in .compile(). #20450 (@Oletus)

Documentation

• Improved Creating a Scene page. #20468, #20525 (@montoyamoraga, @subtra3t)
• Improved Quaternion page. #20396 (@FlorentMasson)
• Improved VideoTexture page. #20476 (@Mugen87)
• Improved constants page. #20488 (@linbingquan)
• Move to let/const. #20484, #20487, #20485 (@Mugen87, @linbingquan)
• Improved Chinese translation. #20533, #20532 (@SJoshua, @zhangyxyx)
• Remove obsolete list.js imports. #20545 (@Mugen87)
• Make list.js to a JSON file. #20553 (@Mugen87)

TypeScript

• Add is* boolean to every texture type. #20483 (@DavidPeicho)
• Export TextGeometryParameters. #20467 (@Methuselah96)
• Remove Scene.dispose() definition. #20496 (@wal0x)
• Add missing DataTexture2DArray declaration. #20526 (@djytw)
• Add mouseButtons to TrackballControls. #20551 (@markhog)
• Fix parameter error of AnimationClip.toJSON(). #20569 (@beidongjiedeguang)

Examples

• Clean up. #20438, #20470, #20513, #20517, #20536, #20567, #20570, #20571, 39aca0494bd7eb88da19ccf336f43772538eb3c0 (@linbingquan, @Mugen87, @mrdoob)
• Remove ExplodeModifier. #20458 (@Mugen87)
• Remove Fire. #20495 (@Mugen87)
• Move HTML example code to let/const. #20500, #20501, #20503, #20505, #20507, #20509, #20510, #20512 (@Mugen87)
• Update name of face mesh in webgl_animation_skinning_morph example. #20504 (@donmccurdy)
• Make files.js to JSON files. #20544 (@Mugen87)
• Add 3D LUT color grading post processing pass. #20558, #20562 (@gkjohnson)
• Add EdgeSplitModifier. #20535 (@Mcgode)
• Removed deprecation warning from examples/js files. #20568 (@mrdoob)
• Fix toggle icon CSS issue. #20566 (@Mugen87)
• Added curve modifier examples. #20538 (@AdaRoseCannon)

• GLTFLoader

  • Fix handling of glTF files with optional KTX2 extensions. #20518 (@zeux)
  • Add support for EXT_texture_webp. #20539 (@donmccurdy)
  • Implement support for EXT_meshopt_compression. #20508 (@zeux)

• OBJLoader

  • Fix normal generation. #20498 (@gkjohnson)

• OutlinePass

  • Exclude point clouds and lines. #20460 (@Mugen87)

• SelectionHelper

  • Use Pointer Events API. #20514 (@tsaockham)

• SSAOPass

  • Exclude point clouds and lines. #20451 (@Mugen87)
  • Make visibility cache to a property. #20459 (@Mugen87)

• STLExporter

  • Use BufferGeometry, supported skeletons. #20494 (@Mugen87)

• WebGPURenderer

  • Fixed byte size alignment in WebGPUAttributes. #20442, 7bc80c5a84e277cef288fe2a5d35b1d1347fc10b (@pplux, @Mugen87)

Editor

• Clean up. #20464 (@linbingquan)
• Support animation export with GLTFExporter. #20454 (@Mugen87)
• Improved Chinese translation. #20466, #20557 (@linbingquan)
• Fix ViewHelper with translated camera. #20524 (@Mugen87)
• Change color picker to realtime. #20528 (@codedeep)
• Make playback speed of animations configurable. #20547 (@Mugen87)

Tests

• Fix ReferenceError in check-coverage.js. #20543 (@takahirox)