I'm "meh" about this.
Extra Credits highlighted this well, that there's a lot to cover in WWII, but in media, especially in games, it's always the same old locations, over and over. So, judging by the supposedly leaked screenshots, we can count on an Omaha/Utah scene (god forbid Sword, Juno, or Gold ever get the spotlight), and likely yet another tale of US forces going across Europe. I'd say we could at least count on the British and Soviets being playable again (or heck, even the Canadians and Poles, per CoD 3), but considering how CoD has been about singular heroes for quite awhile now, I wouldn't be surprised if it goes the MoH route, and be all US, all the time. Heck, even MoH had you playing as a US soldier in Berlin, because those damn Reds couldn't possibly take the Nazi capital by themselves.
If this is coming off as anti-Yank, it's certainly not, but there's a certain myopia in WWII games, in terms of both protagonists and theatres of war. Taking the leaks as being legit, I don't see this supposed WWII CoD game changing that.