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+Qt 5.9 introduces many new features and improvements as well as bugfixes
+over the 5.8.x series. For more details, refer to the online documentation
+included in this distribution. The documentation is also available online:
+
+http://doc.qt.io/qt-5/index.html
+
+The Qt version 5.9 series is binary compatible with the 5.8.x series.
+Applications compiled for 5.8 will continue to run with 5.9.
+
+Some of the changes listed in this file include issue tracking numbers
+corresponding to tasks in the Qt Bug Tracker:
+
+https://bugreports.qt.io/
+
+Each of these identifiers can be entered in the bug tracker to obtain more
+information about a particular change.
+
+Third-Party Code
+----------------
+
+- Updated assimp 3rdparty library to version 3.3.1
+
+Important Changes
+-----------------
+
+ - Added zooming with the mouse scroll wheel to
+   QFirstPersonCameraController and QOrbitCameraController.
+ - Updated assimp scene importer to load simple keyframe and morphing animations.
+ - New Animation module supporting key framed animations.
+ - New Scene2D module supporting rendering Qt Quick within Qt 3D scenes and
+   interacting with them.
+ - Level of details support.
+ - 2D distance field and 3D geometric text support.
+ - Physics Based Rendering support.
+
+Render
+------
+
+ - Added new QBufferCapture frame graph node to support QBuffer readback.
+ - Added new QMemoryBarrier frame graph node.
+ - Added EnvironmentLight type for environment mapping. Works well with PBR materials
+   in Qt3DExtras to give realistic lighting and specular reflections.
+ - Added support for level of detail with the QLevelOfDetail component and helpers.
+   Allows switching based upon distance from camera or projected screen size.
+ - Lots of performance and stability fixes.
+
+Scene2D
+-------
+
+ - Added new Scene2D module, which allows rendering Qt Quick content to Qt 3D
+   texture and using it as part of a 3D scene.
+
+Animation
+---------
+
+ - Added technology preview of new Animation module.
+ - Added new animation classes to support loading animations using assimp scene loader.
+ - Added support for defining key framed animations or loading them from file.
+ - Added an animation export script for Blender
+ - Added classes to play back simple key frame animations and apply the animation to
+   arbitrary QObjects or QNodes.
+ - Added classes to support play back and blending of key frame animations. This allows
+   dynamically combining libraries of animation clips at runtime.
+
+Extras
+------
+
+ - Added support for Physically Based Rendering with QMetalRough and QTexturedMetalRough
+   materials.
+ - Added new QText2Entity for distance field based 2D planar text in 3D scenes.
+ - Added QExtrudedTextMesh and QExtrudedTextGeometry classes to support 3D text rendering.
+ - Added new QMorphPhongMaterial to support mesh morphing and phong lighting model.
+ - Added new QTextureMaterial to support simple unlit textured geometry.
+ - Improved API consistency between QML and C++
+
+Examples
+--------
+
+ - Added new simple custom material and advanced custom material examples.
+ - Modified multiviewport example rendered content.
+ - Added new Scene2D example to showcase the new feature.