If it does 16M by the end of novmber, it will mean it sold almost 2M or 2.5M consoles in november alone. And you think in december it will do only another 2M? I think it will do almost twice whatever it does in november in december.

In november, only one territory (NA) observes a holiday/festive season spike. Black friday. In december, the whole world goes on a buying spree so theer will be a global spike.

IMO it's a decent bet that PS4 had hit 14M by the end of last month, this month should be at least 2 million. Next year will be far crazier, GT7 may make it on top of those games you mentioned, we'll also see Ratchet & Clank, Tearaway Unfolded, big indies like Rime, Alienation and there's the potential for more announced 1st party AAA exclusives being announced either at Playstation Experience next month or at the various events throughout next year.

I think it's a safe bet we'll also see a the system have a price cut, which with backing of the games already announced will no doubt cause a huge spike in the sales. There's also the possibility of Morpheus being released, which would make PS4 the only platform with true VR, that will likely also be backed by some exclusives and 3rd party games.

Hellblade may get a 2015 release 1st on PS4, along with No Man's Sky, plus there's also F2P games coming as console exclusives.

I wouldn't be shocked if PS4 tops 40M by the end of 2015.