Blizzard has confirmed that Dragonflight will include Chromie Time rescaling and that there are some scaling bugs on the Dragonflight Beta right now such as Heirlooms.
We are not doing a squish. The overall goal is for player-characters who are at level 60 today to log in at level 60 in Dragonflight with the same item level and approximately the same stats as they had before.What we are doing: rescaling Chromie Time.