The Season 5 PTR Campfire Chat covered some of the upcoming changes to summoned Bosses, including specific quality of life adjustments to the Echo of Varshan and Beast in the Ice encounters.
General Changes to Bosses in Season 5
Bosses can now be summoned multiple times within the same instance, meaning players will no longer need to reset the dungeon before summoning a Boss again. Summoning Altars will reappear once a Boss is defeated.
