Blizzard has announced that BoEs will drop as BoP from Mythic raid for the first few weeks of Dragonflight Season 1.
BoEs in Dragonflight are no longer random drops but guaranteed loot from lieutenants on trash.
When the Vault of the Incarnates raid opens next week, enemies inside will occasionally drop Bind-on-Equip loot, as in previous raids. For early Season 1 play, we’re putting a restriction on BoEs that drop in Mythic difficulty.