Since they officially announced it at an Xbox One event I'm thinking they'll stick with the deal they made with microsoft for the current generation. If you can confirm this or proving it wrong leave a reply and let me know which console will get it because it's a big deciding factor for me on which console to buy.
The exclusivity deal has never, will never make the slightest difference to my console of choice. (I'm not a sheep)
I didn't buy any DLC for Black Ops2, I'm sure I wasn't alone, so Activision have to weigh up the risks of alienating 50% of their franchise.
I guess Xbox players pay for exclusivity through Live, I'm fine with that.
I'll stick with PSN