plasma5-session-wayland from KDE:Frameworks5:LTS project
Select Your Operating System
Add repository and install manually
For openSUSE Tumbleweed run the following as root:
zypper addrepo https://download.opensuse.org/repositories/KDE:Frameworks5:LTS/openSUSE_Tumbleweed/KDE:Frameworks5:LTS.repo zypper refresh zypper install plasma5-session-wayland