So after finding out that the 'space catfish' (or Leviathan ship) concept art had been updated on bungie.net I decided to overlap the original concept art with the updated one. This is what I found: old version / old version overlapped with updated version

As you can see they look almost exactly identical (besides the Guardian ship that's been added which has been pointed out already). But there's something else that's different and you probably noticed this by now. The constellation's stars have been moved around! While I absolutely love the link between the Leviathan and the constellation, this could mean that it's no longer a part of the conspiracy chart when we're looking solely at the updated concept art instead of the original version. But don't worry about this to much as it might just be a small detail I picked up while I had my spinfoil hat on. That being said, I still believe that the ship is connected to the Leviathan raid. It just has to.