Here’s a very useful visual representation of the item levels coming with patch 10.2 and Season 3. Technical-Metal-1621 put up a chart comparing current Season 2 and upcoming Season 3 item levels for raids, crafting, Mythic+ and the Great Vault.

While the numbers are slightly off when it comes to raids (they start a few item levels lower than the actual stats) overall they’re all correct and are a very handy visual for picturing the upcoming item level distribution. We get to see all the raid difficulties, M+ keys, Great Vault breakpoints as well as the various Crest level ranges, so let’s take a look! 


Source: WOW S3 ilvl visualization.


Hopefully this gives you a good idea of the item level progression, especially compared to current Season 2 numbers!