KDE Bigscreen

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KDE 5.26 should have a bigscreen modus

Is this modus available in Fedora 37?

Distributions offering Plasma Bigscreen - Plasma Bigscreen it’s an early stage work-in-progres project, created rather for single board computers (RaspberryPi like) connected to TV.
There’s a full-screen application launcher (RMB on application launcher’s activator → Show alternatives) that you might find useful.

it is only for arm systems.