Microsoft’s deal to get an exclusive release window for the Call of Duty DLC, so you can play it first on Xbox 360 and Xbox One does extend to the newly announced Advanced Warfare.
A post on the Xbox Wire confirms that this title is covered by the agreement for the COD DLC first on Xbox agreement. It still is not known what the length of this deal is and neither Activision or Microsoft want to talk about it.
It is really hard to tell how much if any the advantage of getting the COD DLC a month before the PlayStation 3 and PlayStation 4 has paid off for Microsoft. Again this seems to be a subject that no one really wants to talk about.