I’m sure others have figured this out, but there IS a noticeable pattern as to who will be the Featured Faction of the month, and that pattern is:
In the Faction Fight, whichever faction is against the currently Featured Faction, will become the new Featured Faction in 3 months.
This was first implemented in June, when the Patriots were featured. During June’s Faction Fight, they were against the UAF. Let’s think of months as numbers: 6 (June) plus 3 gives us 9 (September, the current month), and who’s featured? The UAF.
I can tell you for a fact that October will be Magistrates (in case all the teaser images weren’t enough proof), November will be Shoremen, and December will be The Watch. Don’t believe me? Take a look at the calendar from 3 months before, and who the UAF are battling in the upcoming Faction Fight.