Could We See the Return of World War II to Call of Duty?

Could we be possibly seeing the next Call of Duty returning to its World War II roots? YouTuber, TheFamilyVideoGamers put up images on a reveal video depicting a World War II setting with the Call of Duty headline above it. The YouTuber claims the images were emailed to him unsolicited by an anonymous source. Activision has made no statements in regard to these images, but just last month Activision said in an earnings release that they will be bringing Call of Duty back to its roots, so maybe these images do have some validity. You can check out TheFamilyVideoGamers video below. The image in question shows up at the 3:53 mark.