It's great, that Nintendo can rely on Monolith for doing some work for them. It's not unusual for studios to participate in making of video games but not being principal developers. They are close to Nintendo and do some jobs like developing single characters, add some game mechanics like scripts or AI or the like... They are doing some works for studios without being involved much in the game itself - maybe that is the case here, too.
They are a first party developer for Nintendo, since they bought almost all the share from Namco Bandai and they are doing great, making ecxellent games: Baten Kaitos (from which Origins never made it to Europe, shame!), Xenogears...
So apart from runnig a long development cicle with the misterious rpg for Wii U, they are of some use for Nintendo by helping with manpower for some titles.
I am glad they help out Nintendo, but they are owned by Big N, so nothing special here, maybe you should add this the news, clarifying it a bit more, Jorge.