In the upcoming patch, there will be several changes about Critical Damage, Sigil and Rune, PVP gear and Balance, according to some developers. And d each topic has some pretty big points and some points that clearly needed to happen awhile ago. See below to get details.
If you need to find some quick notes about the changes you can find it here(thank you Valaruka_ on Reddit for these notes!), or you can go the livestream itself here.