I've just noticed a possible new design astetic with the Kelvin (and possibility the Enterprise as well).
There doesn't appear to be any windows along the saucer's edge.
This shot is in motion (look at the stars) so some details are blurred, but there are some windows on the rim, and probably more of them hidden behind that green ship. From their position it almost looks like the rim might be more like 3 or 4 decks thick!
Also, it almost looks like there might be 3 forward ports like on the TOS ENT, but they are not lit.
And call me crazy, but that really looks like a row of windows on the front of the bridge. Though, if the ship is big enough there might be a ready room or lounge in front of the bridge. This is supported by the bridge cieling dome being so tiny in comparison to the bridge structure itself.
If this ship is supposed to be older/smaller than the Enterprise, the ENT herself could end up being...kinda way way bigger than 947 feet.