The God King Golgoth gave out his summons and the gods of Trion responded, sending out their consciousness to take form before the temple of the God King.
It was rare for Golgoth to summon them, things were clearly changing as he had summoned them twice now in less than two decades. The first time he did so, he had changed the direction of Trion, and with another summon this quickly, something big was soon to be inevitably announced.
On the fields of Elysium, the gods of Trion had finished manifesting their material form, because of how recently they had been summoned there were little to no changes in their physical appearances.
The appearances of the gods of Trion are largely manipulated by the perception of their descendants of worshipers. Their massive statues all around Trion and the Empire-controlled spaces ensured there were little changes in their appearances over the ages.