Original Post — Direct link
Ubisoft statement "no server maintenance this week"?

Seriously?

Now we have a maintenance ongoing
almost 5 years ago - Ubi-Johan - Direct link
Today's maintenance is to deploy a hotfix for some issues introduced with Episode 1. Full patch notes will become available soon, but as previously mentioned it includes a fix to the Defender Drone.

In order to fix some of these issues, a client side patch is required and those are deployed during maintenance windows.

/ Johan