It's quite likely. Treyarch and Activision have worked together on previous CoD titles (Black Ops, CoD 3, etc).
activision~http://www.activision.com/index.html
Activision, Treyarch, and Infinity Ward and Sledgehammer
It was developed by Treyarch for Activision
treyarch and activision
Call of duty 5 was developed by Treyarch, and publishers are activision. There is another name for Call of Duty 5, it is called "Call of Duty: World At War" or "CoD: WaW."
Activision released the Treyarch developed game
Treyarch, Activision and Claudine Perillo
Treyarch made Black Ops for activision
Call of duty is a franchise. Activition owns it. Activision also owns Infinity Ward and Treyarch the developers of the different series of Call of Duty games. Treyarch was the developer of the Call of Duty Black Ops and the 4 DLCs for the game
It's there job to make a new game every 2 years for Activision's Call of Duty series
Treyarch and Infinity Ward both make games for Activision who does the series
The game was developed by Treyarch and published by Activision and designed by Margaret Tang