NobleTeam360 on 28 October 2014
I've contacted Activision about this and they told me you have to buy the 360 version to get the Xbone free and it doesn't work in reverse (you buy the Xbone copy and you get the 360 version). Also I've been lead to believe that you don't get the bonus MP map or the extra day of playing that you get if you buy the Day Zero edition. Both are turn offs for me but at the end of the day I'm still willing to wait an extra day and get both versions of the game.
* I'm not 100% on the above info, but I'm pretty positive about it*
