Good News, its official ! Killzone is coming in 2013 !
http://blog.us.playstation.com/2012/12/24/happy-holidays-from-guerrilla-games-2/#sfmsg_-7890*sfxd*0*sfxd*0
" working hard to ensure that Killzone: Mercenary will be the ultimate handheld first-person shooter experience when it launches for PlayStation Vita in 2013. " :)
Predictions for end of 2014 HW sales:
PS4: 17m XB1: 10m WiiU: 10m Vita: 10m