In theory, Sloth battle armor was discontinued in 3060 when the Fenrir was unveiled.
But then we find two variants:
Record Sheets: 3085 Unabridged — Old is the New New --> From the Jihad
Record Sheets: 3145 New Tech, New Upgrades --> From the Dark Age
Both seem factory model. Maybe the first one could be an upgrade of the remaining ones, but the second other one, being from the Dark Age doesn't look like. It seems a new variant created in a factory. If yes, where are those factories?