Sorry
As I said I personally doubt it as I think advanced movement to WW2 in the space of 1 game is too much change, but it is strange how they're so active in WW2 stuff now.
There's also Activision CEO saying a WW2 CoD is certainly possible last year. Some googling finds me to Conrey hinting at their next game with 4 hashtags in his twitter bio, #### = WWII? WAW2? It's not there now, so it's been removed since.
I don't want to get anyones hopes up, because even I don't think they will go back fully but something is brewing imo. CoD gradually increased movements each game I don't think they will undo it all in 1 game, they will gradually remove them again if they are going to (Boots on ground > Exo boost > Wallrunning)