Some people dislike Star Trek: Voyager - but not one of those is trying to decanonize it.Because some fans dislike JJ Trek
My point:
The U.S.S. Kelvin:

and its Bridge:


EXISTED in the Prime Star Trek Universe/Timeline. The divergence happened when Nero's ship appeared and destroyed it But it (and it's bridge) were used in the 2230ies.
The U,S.S. Shenzhou looks old (especially given the NX-01 Saucer elements and Gold Deflector dish.) It is probably from the same period as the U.S. S. Kelvin or earlier - but either way given the Bridge design of the U.S. S. Kelvin - I don't see ANY issues with the Bridge Design of the U.S.S. Shenzhou as we see it in the Trailer; or have trouble seeing it as a design that was uswed in the 'Prime Universe' because we have canon evidence of a similar Bridge design.
Now I'm not judging the fact that given the designs you personally don't like what you see of the show in the Trailer. BUT, there's nothing to indicate it's in an alternate Star Trek Timeline (in fact the Producers say IT IS in the Prime Timeline) because again the U.S.S. Kelvin EXISTED in the Prime Timeline prior to the divergence that became the "JJ-Verse".
