As we all know Call of Duty has been aiming for that futuristic look and feel to it since their main competitor is Halo and Destiny which do take place in space. This years game is being developed by Infinity Ward and will most likely be not a sequel to Ghosts. This next Call of Duty game will be firmly placed in a sci-fi territory and it will be interesting to see how it’s going to be and how the campaign will be as it will include space combat and such according to this source
Something else I would like to point out is that back on New Years and it included an Astronaut in space. Now this is my question, why in the world would they tweet that on New Years and everyone is catching up on it now? Well this is just a rumor but I think it can be true to an extent.
— Infinity Ward (@InfinityWard) January 1, 2016