Hey everyone, I wanted to make a little overview for myself with the informations I got, instead I tried to do a little infographic.
I know its not visualy pleasing since its so overloaded, but this is my cheat sheet with every information i thought was important for upgrading itemlevel.
Hope this helps, and please let me know how to improve and if i missed something!
Edit: What is a Watermark?
Watermark is the highest itemlevel you have on a slot that will determine how high your next drop can be.
If you loot a 505 helmet → you can now drop 510 helmets for example.
Only counts for that specific slot
We can also see the full explaination from Devs in the blog: