I have added Spectacle to the Plasma 6.3 release list https://invent.kde.org/sdk/releaseme/-/commit/82f6d5cf68d5c5942bbcdd9f7209f87f305b1824
However tracking translations from trunk for the Plasma branch will need some pondering where to set that. To set the version number to the Plasma format please follow the setup in e.g. the first 41 lines of Bluedevil https://invent.kde.org/plasma/bluedevil/-/blob/master/CMakeLists.txt?ref_type=heads The invent category has no usage as far as I know although it's more tidy if everything Plasma is in the plasma category I feel. Jonathan