As represented by a replica produced by Dark Horse.
Fits in with the story we've heard so far, that the Alliance got their hands on the SR-2 and rejiggered it. Judging by the markings I'd say the proper name of it is the SSV Normandy SR-2, since it's an Alliance vessel again.
As for the design, really not a huge fan. Don't like that shade of blue and the segmenting looks kinda crappy, but there you go.