Which has been downloaded and installed.
It's not just an update.
Server maintenance shouldn’t take more than a few minutes, unless there’s a big issue. There should not be a big issue this far into the game cycle.
So maintenance also involve, server patches and updates. Maintenance is not just about game updates... it's also security, hardware, and behind the scene things that keep things smooth and our personal data safe.
Also, situations occur during updates that are unplanned, which suck when it affects people. So, sometimes it does take longer depending what maintenance is being done.