openSUSE 42.2 Leap is still at the moment in RC2 state but a upgrade is already possible.
More information about 42.2 Leap can be found in the official release notes
I have a fresh installed 42.1 which is fresh patched so the first step will be the replacing of repository information:
cd /etc/zypp/repos.d sed -i 's/42.1/42.2/' *
Load new repositories:
Now you can start the upgrade procedure:
The final step is a reboot: