Based on the contract revealed between Bungie and Activision it would seem that the order is Wii U > next Xbox > PS4.
Based on the information revealed in that contract, Bungie was to deliver a game in 2013 for both the Xbox 360 and the next Xbox. In 2014 when the DLC is released, a PS3 version would be released. In 2015 the sequel would be released on I believe only the next Xbox and PS4, but it may have also included the Xbox 360, but there would be no PS3 version.
As I suggested before, this would imply that Activision is not planning on the PS4 being available until sometime in 2014 and from what I can assume, late in the year. Otherwise, I'm not sure why they wouldn't have a PS4 version of the Bungie game at the same time or before the PS3 release.
This would also seem to imply that the architecture of the PS3 and the PS4 are not the same, nor similar. If they were, then a PS4 version would seem likely at the same time as a PS3 version.









