Just what is this a Space Port or Support Ship, it seems to large to be anything but some new Spaceport. It’s huge compared to the Carrier and must have thousands living on board, and It doesn’t have a toaster slot so what is it. Maybe the slot is on the back side
Those are, apparently Support Ships that will travel
with your Carrier.
There will, apparently, be at least three different variants, an Orbis-style ship (pictured) that'll accompany exploration Carriers, a "Hammerhead" ship that'll accompany mining Carriers and a rocket ship that'll accompany Bounty-Hunting Carriers.
Presumably, the type of Carrier you pick
will might determine what specific facilities you have on your Carrier (UniCart/Market/Authority Contact) although whether that will involve interacting with the Support Ship in some way is anybody's guess.
It's worth noting that the Support Ships don't have any landing pads visible on them so it doesn't
appear that we'll be landing on them.
It also don't look like they're small enough to land on a Carrier either so it looks like they'll tag along like Pilot Fish to the Carrier's Shark.
Presumably, the Support Ships will serve
some useful purpose, though, for FDev to go to the effort of, effectively, doubling the number of new assets that'll be present in the game.
Maybe the Carriers won't be able to move around in-system but the Support Ships will, thus providing some benefit, somehow?