Fedora developer Daniel Vrátil has announced the availability of KDE Plasma 5.6 beta on Fedora. This week's Plasma 5.6 beta release is already available when enabling the Fedora KDE SIG's Copr repository of plasma-5-unstable. There is also packaged the new GRUB and Plymouth themes around KDE's Breeze.
More details via this blog post. Plasma 5.6 will be officially released later this month.