Blizzard has posted more Diablo 4 hotfix notes which includes more adjustments to Elite Monster density in dungeons and Legendary Aspect changes.
HOTFIX 9 – JUNE 12, 2023 – 1.0.2
Dungeons
Further adjustments to elite monster density in dungeons.
Developer Note: We are standardizing the density of elite monsters that spawn in dungeons to ensure that no particular dungeon is clearly more efficient to run through than others.