There's going to have to be some major explaining involved if they want us as an audience to buy whatever these things are as Klingons, especially since the series has been confirmed to be set in the "Prime" timeline and we know what Klingons looked like at this point in the story and there's no good reason why they shouldn't have stuck to those designs (either the "smooth-headed" Augment look or the "bumpy forehead" look).
Bryan Fuller said last year they were re-imagining looks, that is the explanation. No lore reason, just production.