Well we have at least a right side and top view from Eaglemoss' poster at Destination Star Trek, so that's pretty close to official as they're given the CG files.
Yeah, those helped, though they're pictures from a poster, so not as clear as I'd like. Plus we're missing the rest of the views.
See, they were actually triangle shaped on the TOS Connie, so as much as they have tinkered with the design, I think they are still triangle shaped areas (or landing strut covers, etc.).
I know they were triangles-ish, but their apparent movement in the episode seems to indicate that they've changed them. See what I mean:

They look like rectangular depressions, the shadows of which would appear as triangles under some conditions.