PS4 was unveiled last night, and along with it Guerrilla Game's launch window title Killzone: Shadow Fall. In a round-table after the reveal, managing director Hermen Hulst stated that development costs for PS4 haven't risen as much as people might believe.
GI.biz reports that Hulst played down rumours of spiralling dev costs going in to next-gen platforms. He admitted that PS4 costs are higher, naturally, but that the increase is not as dramatic as people think. To give an example he revealed that team size on the original Killzone and Killzone 2, Guerrilla's team size maxed out at 125.
By comparison, the Killzone: Shadow Fall team on PS4 now sits at 150 people. Hulst cited more efficient dev tools as key to keeping costs reasonable, and that next-gen is all about making development 'smarter'.
We've got the first gameplay footage of Killzone: Shadow Fall here, and yes this is actual gameplay, Steph was at the event and saw it being played live.