As far as I know it originally started out as a 3 year contract beginning with Modern Warfre 2, but now it seems as if it will never end and its really beginning to annoy me a lot. They (Activision) receive nearly half the sales from PS3 users alone and this is how they treat us every year. Its almost as if we don't exist. They need to end this garbage this year, or give PS3 players a 5+ year contract and see how much Microsoft fans like it. They don't even know how hard it is waiting a WHOLE extra month to play the content. Its beyond me why they keep this thing going every year, oh wait for money. If it was a less popular game I wouldn't care nowhere near as much, but your pissing off 1,000,000+ players who constantly play Call of Duty.Ghosts in n out throught out the day.
Here are links for sales for PS3 and Xbox360.
PS3 - http://www.vgchartz.com/game/71507/call-of-duty-ghosts/
X360 - http://www.vgchartz.com/game/71508/call-of-duty-ghosts/