User blog comment:Argorrath/Advanced Warfare - M1 Irons release date TBA/@comment-24087008-20150507061003/@comment-24756040-20150507100952

Because Sony doesn't pay Activision for their platform to be a priority with Call of Duty titles. And since PS3 is last-gen, last-gen being naturally behind, PS3 is just naturally the last out of all consoles.