This is the main new feature release for this year and is the base version for the CY2026 VFX Reference Platform (which specifies 2.5.x).
The headline features this year are built-in ACES 2 configs, Vulkan support, a hue curve transform, and a set of new color space attributes designed to enhance interop.
In addition, there is a Preview Release of the config merging feature. The workflow possibilities of this feature are far-reaching and further modifications to the API and functionality are anticipated, based on your feedback, before this is finalized.
Ideally, application developers will introduce 2.5.0 into their testing programs now and then update to the latest 2.5.x release available before shipping next year.
This documentation page explains the new features in this release.
Major new features:
PR #2176, Vulkan support
PR #2193, Adding built-in ACES 2.0 configs
PR #2177, Add hue curve transform
PR #2165, Adding color space attribs: interop_id, amf_transform & icc_profile_name
PR #2171, Refactor RTD Python API doc generation
PR #2179, Merge configs feature
Bug fixes and minor enhancements:
PR #2154, Fix pass-thru exponent composition issue
PR #2189, Include color spaces with no categories in menuHelper results by default
PR #2083, Add view helper functions to Config class
PR #2183, Add built-in displays that mirror rather than clamp negative values
PR #2186, Enhance active display/view list API
PR #2181, Add the ability to serialize temporary displays
PR #2198, Add setStringVar to Context Object Python Bindings
PR #2147, Add Flame and VRED to website
PR #2088, Add Disguise to list of supported applications
PR #2138, Add AJA ColorBox as a supported application
PR #2161, Feature/update landing feature image
PR #2167, Renaming the view helper functions to follow the OCIO conventions
PR #2166, Add Python GPUProcessor example
PR #2194, Adding interchange attributes to ViewTransforms and Looks
PR #2168, Update Python frozen docs
PR #2202, Update documentation for 2.5 release
Build process enhancements:
PR #2192, Bump C++, dependencies and update CI workflows
PR #2113, Fix deploy site workflow
PR #2140, Fix build issue when using clang
PR #2115, Use ARM-native runners for linux ARM Python wheels
PR #2158, Adjust requirements.txt for documentation-building ci step
PR #2188, Attempt to fix new MacOS CI problem involving unit tests on half values
PR #2190, Fixes for the Wheel workflow
PR #2184, CI fixes
Many thanks to the following contributors:
@remia, @cozdas, @KelSolaar, @michdolan, @zachlewis, @michaelHADSK, @carolalynn, @KevinJW, @mdecaria, @num3ric, @annieln, @anthony-linaro, @beatreichenbach, @immanu10, @seanblit, @chrisnashdisguise, and @doug-walker
