I’ve been waiting for this release, because of the first item on the first TWiK after the release of Plasma 6.0:

There’s a new KWin effect called “Hide Cursor” (off by default for now, but try it!) that will automatically hide the pointer after a period of inactivity (Jin Liu, Plasma 6.1. Link)

https://pointieststick.com/2024/03/02/this-week-in-kde-a-smooth-release/