Myth Gear levels changed in The War Within
Myth gear is the highest type of gear power you can get in each expansion in world of warcraft. During Dragonflight, the Myth gear had 4 levels of upgrades: Myth 1, Myth 2, Myth 3 and Myth 4.
That has now slightly changed in The War Within. The Myth gear will now have 6 upgrades:
Myth 1 623 ilvl
Myth 2 626 ilvl
Myth 3 629 ilvl
Myth 4 632 ilvl
Myth 5 634 ilvl
Myth 6 636 ilvl
The First two bosses on mythic difficulty in the new Raid Nerub-ar Palace drops Myth 1 gear. Boss 3 and 4 drop Myth 2 gear. Boss 5 and 6 drop Myth 3 gear and the last two bosses drop Myth 4 gear. The last boss will have a very rare drop chance on a ring that has Myth 6 quality.