AH! I originally thought that as well. I recently discovered that's the main-line Aquarius (AAA-08) that has the extra dome armor. The
Laboratory Aquarius (AAA-07 - I'm assuming prototype) has the original Ginga dome. Someone's built some models of both of them, side by side, a photo I recently discovered that pretty effectively shows the differences between the two:
The production Aquarius also has some extra detailing around the hull, some extra stabilizer fins at the top of the bridge and some hard-mount points for a pair of tiny ships in Mars Defense Line livery (they look like
unmanned destroyers from the classic
Yamato New Journey) to dock on either side of the main hull. The Lab Aquarius that I'm working on now is based on the first model at the back of the picture. The regular Aquarius will be a little more challenging. I haven't figured out how I'm going to include the unmanned destroyers yet.
Here are some other shots of the main Aquarius with the extra details:

Everything AAA-07 and above (what's the AAA-
06, I wonder? I have found literally
nothing about it!) are apparently considered "AAAAS" ships, or "AAA
(Andromeda original nomenclature) Advanced Stage".
Eventually, I'll get to this monster, the Amaterasu (named after Sasha's ship that crash-landed on Mars containing information about Iscandar and the Cosmo DNA - not sure of the "AAA" registry, which has a LOT of major differences from the original Andromeda line:

And this weird little thing, the L'Andreomède (AAA-009) / Vem Heidern (AAA-010) / Dels Gardola (AAA-011) which, judging by the livery and hull structure, seems to be another one of those EDF/Gamilas hybrid ships, deviating even more from the core Andromeda line:
I tell ya, it's been a real slice of P.I.T.A. bread trying to track down information on all these variants. So many versions, and so little info in English. I'm going to try to find that article you mentioned on CosmoDNA. I may have already seen it just not dug too deeply into the translated text - which I probably should have done in retrospect.