Posted by: sa7anicBarracuda
so far its been speculated to be several things:
sanghelios (highley unlikley)
GoO micro dyson sphere (to small to be that planet)
a ananomous 'shield' world (most likley, possible didact, or mendicent bias location post ark.)
Mendy is asploded. He is dead.
But it could very well be the Didact's hidey hole.