They really should alternate on a three year cycle between Historical, Modern and Future setting. BlackOps, Modern Warfare, WWI/II/etc. So this wouldn't surprise me if true, though they should drop the number from the name and just subtitle it.
I still can't believe they thought Advance Warfare, Black Ops 3 and Infinite Warfare, 3 futuristic games all in a row, was a good idea. Just look at IW's sales.