https://wccftech.com/blizzard-feral-druid-changes-bfa/

Blizzard has rolled out a new World of Warcraft Battle for Azeroth hotfix that includes various changes for the Druid Feral spec and has detailed upcoming Feral Druid changes in future patches.

The implemented hotfix reduces the energy cost of ‘Thrash’, ‘Swipe’ and ‘Brutal Slash’, while the duration of ‘Berserk’ has been increased. In addition, the base energy regeneration rate has been increased by 10% and the damage of the ‘Rip’ skill has been increased by 15%.