From E3, an IGN article about BOP

[Mefna]

Originally Posted by OntheCrab

Remember, every article and preview of BoP has stated that the multiplayer details HAVE NOT been revealed. That would be where the other planes are flyable, especially considering the IGN write-up describes the MP as being more adversarial than co-op.

12 planes have been confirmed....for the CAMPAIGN. I wouldn't fret too much.

Thanks for posting those sasquatch.
I hope BoP gains some reasonable buzz otherwise i would say it confirms that we're all huge nerds following a cult genre.

Yeah, I guess you're right. We will just have to wait and see.