Anyway, I was browsing through Twitter when I saw this tweet from Lylirra:
Basically, it seems the mystic can reroll a property on your current gear to your character's level. Meaning, if your character is at level 70, y̶o̶u̶ ̶c̶a̶n̶ ̶p̶o̶t̶e̶n̶t̶i̶a̶l̶l̶y̶ ̶r̶e̶r̶o̶l̶l̶ ̶y̶o̶u̶r̶ ̶i̶l̶v̶l̶ ̶6̶3̶ ̶w̶e̶a̶p̶o̶n̶ ̶D̶P̶S̶ ̶t̶o̶ ̶i̶l̶v̶l̶ ̶7̶0̶ ̶s̶t̶a̶n̶d̶a̶r̶d̶s̶ you can potentially reroll your ilvl 62 ring's intelligence to ilvl 70 standards.
Update: asked Lylirra about rerolling weapon DPS; it's still unknown if we can do that.
Again, as always, things are subject to change. But this is a promising sign for players worried about their gear becoming totally worthless come loot 2.0.
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