When uprading my hosts to ovirt 4.4, is it better to chose 4.4 or 4.5 cluster compatibility, knowing that there is no planned 4.5 release yet?
Cluster version 4.5 is not related to oVirt 4.5. This is just the next
cluster version, and it is the recommended version to use with current 4.4.
Future 4.4 release may introduce cluster version 4.6.
Some features will not be available unless you use cluster version
4.5, such as incremental backup.
Nir