Info:
2.5.0

Added :
Add support for AMD Radeon Pro and AMD FirePro GPUs
[Tool] Add support for stroke opacity
[Tool] Add a modifier that allow to continue the last brush stroke
[Iray] Update to support Pascal GPUs
[Viewport] Add support for Color Profiles (LUT)
[Substance] Integrate new framework (SD6 engine)
[UI] Increase “recent file” size list in File menu
[Import] Use category from substances to fill the prefix in the import dialog
[Bakers] Allow to bake 8K textures
[Bakers] Allow to bake non-square resolutions
[Bakers] Improve memory consumption when baking heavy high-poly meshes
[Shelf] Lock shelves (and projects) to forbid concurrent editing and avoid corruptions
[Shelf] Read category and keywords from substances to use them for filtering
[Shelf] Allow to exclude ressources from the result of a search query
[Shelf] Improved thumbnails time computation
[Shelf] Allow to embed presets in projects
[Shelf] Allow to quickly collapse/expand the tree-view with SHIFT
[Shelf] Allow to save thumbnails when assets are read only (local cache)
[Shelf] New content : new filters (transform, mirror, tri-planar, etc.)
[Shelf] New content : new LUTs profiles (classic and artistic, such as Film Noir, Vintage, etc.)
[Shelf] New content : 10 new Font Substances to quickly generate custom texts
[Shelf] New templates : Unity 5 and Unreal Engine 4
[Shelf] Improved HSL filter to be more artist friendly
[Shader] Add support for specular level channel in PBR shaders
[Shader] Add support for Dithering in Alpha Test shader
[Shader] Add support for parallax occlusion mapping in PBR shaders
[Shader] Allow to define custom UI for shader parameters
[MatLayering] Create new Mask channel for material layering workflow
[Scripting] Allow to write metadata in a SP project
[Scripting] Allow to export with a specific export preset
[Scripting] Allow to retrieve shader parameters as a JSON
[Scripting] Add support for WebSocket connections
[Scripting] Add the possibility to load shader instances
[Scripting] Add the possibility to create a new project
[Scripting] Allow to retrieve the url of the mesh imported in a project
[Scripting] Allow non square baking
[Scripting] Report errors when setting data via scripting API
[Substances] Add user-data tag to specify normal map format

Fixed :
Crash when picking color with substances
Crash when loading a non RGBA32f image as environment map
Crash related to painting on AMD GPUs
[Mesh] OBJ import doesn’t recognize materials without mtl file
[Mesh] UDIM Texture set name generation can be incorrect on some meshes
[UI] Undo/Redo button in Viewer Setting steal focus and stop mouse scrolling
[UI] Some labels are incorrectly cropped in High-DPI
[Layer] Replace mode for paint effect has an incorrect behavior on Mask
[Layer] Subtract blending mode has an incorrect behavior with alpha
[Tool] Brush size becomes huge in 2D View when painting on UV borders
[Tool] Snapped straight line has erratic behavior with High-DPI
[Tool] Stencil resolution is sometimes incorrect
[Bakers] “Max Occluder Distance” values are clamped if “relative to bounding box” is “Off”
[Shader] Stack and auto param channel definitions don’t match
[3D View] Inconsistent display of the normal channel depending of project setting
[Viewport] Some normal maps have clamped values which appear as artifacts
[Viewport] Post-effect are always disabled by default
[Export] Normal mixing setting is incorrect if normal channel is missing
[Export] Incorrect texture generation in some cases on AMD GPUs
[Export] Shader parameters are not exported properly if located inside a group
[Export] Editing an export preset in a custom shelf output a log error
[Shelf] Tree-view filtering does not match exactly the folder name
[Shelf] Renaming a shelf preset is hard to read
[Shelf] Shader resource imported in the Shelf isn’t preserved after relaunching
[Shelf] Content : Weld tool preset is missing
[Shelf] Content : Tile Generator doesn’t work properly
[Shelf] Content : Fixed incorrect mask on Rubber Tire Dirty smart material
[Shelf] Content : Fixed incorrect group name on Leather bag material
[Iray] Half of meshes are missing in Iray
[Linux] Crash when dragging a resource above the 3D View
[Mac] Preferences are reset at every launch on Sierra

Known Issue :
[Export] In very rare case, black rectangles can appear on AMD GPUs
[Iray] Color Profiles can behave in odd ways sometimes