I am not following the speculation on what Caroline's Star could be. I've checked out the cloaked structures, but know very little about the lore of w-space.
I had the thought yesterday that the supernova looked a lot like a new nebula and figured I'd write it down. The part of space I'm in is sort of between all of the other empires. Minmatar looks like a large ball of glowing red. Gallente is a ball of glowing green. Caldari lights up a large part of the sky in light blue.
Spinning the ship camera around, I realized that the supernova remnant looked rather similar to the Minmatar part of the sky. And I had this thought: maybe the supernova is the new marker/nebula for the Jove homeworld.
Maybe the cloaked structures are secret Jove stations that they have been building.
Maybe Jove will finally be a playable race.
I am no doubt entirely and utterly wrong, but thinking back to the early days when Jove were expected to be patched in as new content after launch, a bittervet can dream.