Even as big a tent-pole director as Nolan is, am I wrong to be skeptical that he has a voice against the studio in such matters?
Studio: No no Mr Nolan, you're right, we should wait a couple weeks so it can be seen in the aspect ratio and size you desire for your art.
He probably makes some noise at the studio, but I would bet they only listen to the money men and the "polls" kind of info about when they can make the most money.