Upgrade Status... This geodatabase matches the ArcGIS release you are currently using, however, database internals such as stored procedures can be upgraded. I saw this through beta... See this from 10.1 Client.
From 10.0 Client. The 10.0 database matches the ArcGIS release you are currently using.
So, it matches 10.
This is my Test Server, btw, before I do my upgrade in a few hours.
Was able to change topology cluster with no issue yesterday.