Oh yes, it's a virtual certainty. Like Lord of the Rings, Jackson will re-write the story and tell it how he thinks it ought to have been.
My guess is that Churchill will turn down the dam raid idea but will be persuaded into changing his mind by Roosevelt.
During the raid, British pilots will determindly bomb the Dam, but all to no avail, and they will almost despair. But, at the last minute, an American crew, led by Viggo Mortenson, will go that bit further, braving the very worst of the flak, and will release the very last remaining bomb which, due to an enhancement that an American scientist insisted upon, (despite Barnes Wallace objections) will succeed in destroying the dam.