Also, the different points of view on these ships (if we indeed are looking at a single design) are difficult to put together.
The fleet moving towards Mars is seen from almost directly astern, and there we see angled wingtips. The fleet blasting stuff in a red environment is seen from above, and there are no angled wingtips there, but there could be if we squint a lot. This side view lacks the "kite" profile with a pronounced bow or stern stinger and two separate wing elements that combine into a diamond whole, but does have the narrow, angled tips.
Might be these are three distinct designs. Might be one design morphs a lot (like they made the Death Glider morph a lot in the SG-1 pilot). Might be TPTB can now afford to show lots and lots of Romulan designs, even if they also insist on showing a fleet composed of but a single model. Might be much of the trailer was placeholder work, and only one of the two separate designs seen there will survive, or both will be replaced by a third, which may or may not be this one.
Timo Saloniemi