I noticed that ESET Internet Security Version: 220.127.116.11 was released today.
My current version is 18.104.22.168.
Can I install new version "on-top" of my older version and keep all rules and settings?
To keep your settings and make the easy the update you can go to "Updates" and hit to search for any updates and new versions.
If a new versión is not show just wait, will be there soon.
Even is you don't do anything our last versions of Home product has an auto-update related to the version. After install you just will be ask to reboot the system from inside ESET.
Note: I don't know if your country has an special setting by ESET, so far in my region what I say happens.