https://www.phoronix.com/news/XDG-Desktop-Portal-1.21

New XDG-Desktop-Portal 1.21 features include a new reduced motion setting in the Settings Portal, to express your desire for apps to minimize non-essential motion in animations.

XDG-Desktop-Portal 1.21 also adds support for Linyaps applications. Linyaps "Linyaps Is Not Yet Another Packaging System" is a cross-distribution Linux package format spearheaded by the Deepin Linux distribution and supported by other select Linux distributions. XDG-Desktop-Portal's app-info added a linyaps xdpAppInfo subclass with a developer planning to maintain the implementation.

XDG-Desktop-Portal also now supports running tests with Valgrind's memcheck, a ConfigureShortcuts method to the Global Shortcuts Portal, and various bug fixes and other enhancements.