Fedora Kinoite has not been released yet, but you can give it a try using unofficial builds. Official release is planned for Fedora 35.
See details from this Fedora Magazine article: Discover Fedora Kinoite: a Silverblue variant with the KDE Plasma desktop - Fedora Magazine
See also the original thread about Kinoite: Kinoite, a KDE (and now XFCE) version of Fedora Silverblue - #225 by Siosm
Work is in progress to setup Rawhide builds on official Fedora infrastructure. Progress is tracked in Issue #4: Fedora Kinoite (KDE Silverblue) - SIG - Pagure.io.
We also need KDE Apps as Flatpaks. Progress is tracked in Issue #13: Build Flatpaks for KDE Apps - SIG - Pagure.io