I just saw a post stating that they admitted overdoing the buffs on some classes such as DK and are lower the buffs by about half. Also a great thing that they announced is that the PVE Legendary gems and the PVE trinkets will have a reduced chance to proc against players so to discourage people from using them in PVP. I am stoaked about this change, I was dreading seeing herioc trinkets and Legendaries ruining 5.2