For openSUSE Tumbleweed run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:mschreiner:libreoffice-experiments/openSUSE_Tumbleweed/home:mschreiner:libreoffice-experiments.repo
zypper refresh
zypper install libreoffice
For openSUSE Factory run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:mschreiner:libreoffice-experiments/openSUSE_Factory/home:mschreiner:libreoffice-experiments.repo
zypper refresh
zypper install libreoffice