What do you think this game is. It hasn't even been announced yet and it's supposed to come out in 2.5 months? They said it's not a phone game and in no way God of War HD Vita port. What do you think it is?

http://www.joystiq.com/2013/10/05/armature-studio-has-non-arkham-game-coming-this-christmas/

Could be their own independent game. So it is hard to say.

Apparently, it's largely irrelevant, seeing as how its publisher can't be fussed to announce it.

What they have done before?

I've gotta say that these guys must be regretting ditching Retro Studios by now. If they had dreams of spawning AAA new IPs without Nintendo breathing down their necks, these are far away now.

Not much. The MGS HD Collection on Vita (which was pretty good) and Batman Arkham Origins Blackgate for 3DS and Vita. That's about it. I wouldn't really care anyways. It's probably just a cheap cash-in.