^^prefix codes, perhaps?
Eh... the name isn't very Federation. It sounds more like something the Terran Empire would use or part of a political faction's name. That said, I can see some similarities between that ship and this Dreadnought, mostly in the shape of the engineering hull.
Well, for what it's worth, here's the complete class listing from FJS' 1975 Star Fleet Technical Manual *deep breath*:
Federation (the ship the class is named for)
Not exactly a spellbinding bunch of names. Star Empire sounds incredibly badass to me, and if they use one I'd like it to be that. It's not particularly "Federation-y" but fitting as a villain's ubership, and as a tool of a post-Vulcan Federation that is slipping... (wait for it)... Into Darkness! *thunderclap!*
BTW, where is the discription of this ship from? I take it one of the spoilerific previews?