It’s on the frontpage of MMO-C, for example.
You also have the official post(by Kaivax) here:
#PvP Tuning Changes for January 26
Upcoming PvP Tuning Changes for January 26
We’re working on a new set of PvP tuning changes that will be applied to the game with weekly maintenance in each region (January 26 in this region). Here’s what we’re currently testing:
Player vs. Player
- Players now deal 20% less damage to Death Knight, Hunter, and Warlock pets.
- More stuff…