You can't be certain canon is out the door until the film is seen. There is only a theory it is, which is unsubstantiated until the conclusive evidence i.e the completed, edited and released film, is there to be seen.
And if say, there is another version of the ship by the end of the film with another bridge more closely resembling TOS (bearing in mind time travel's involvement) does anyone seriously believe that would be an image that would be released early on? No, it wouldn't, because it would be the ultimate final revelation saved for the film. Not that I necessarily believe that is what may happen, but it's as likely as any other event in the absence of definitive proof.