I find it strange that they have decided to reveal the trial instead of keeping it a secret like usual. Moreover, if we're going to fight Golbez's shadow dragon then it's almost guaranteed that the Shadow dragon encounter will be in the Aetherfont dungeon. (It could also be part of Golbez's trial, or not, or fighting the shadow dragon in the dungeon and trial too).

I wonder if the Void story is going to be wrapped up in 6.4, but if it's going to continue to 6.5 then we're probably about to see a major event occurring in 6.4 that's going to be carried into 6.5 and beyond.