Mine's not really meant to be the Enterprise predecessor. I think I'm taking it out of the Star Trek universe altogether.
Or it could have been the 22nd century's version of an old-school Popular Mechanics "ship of the future". Somewhat feasible, but for the most part, just fanciful speculation.
I mean, it resembles all the ringship concepts, but it's larger and much more stylized. Could be that some magazine came up with this pimpomatic for an article about what starships would be like in 15 years when the XCV 330 rolled around.
Just a random, sleep-deprived thought.