Feral InstinctA Feral Combat Druid talent in WoW Forever: row 2 of the Feral Combat tree (level 15), 3 ranks, passive. Changed from Classic (was 5 ranks, now 3). Read from the WoW Forever beta client.
What it does Feral Combat row 2

Feral Instinct3 ranks · passiveRequires 5 points in Feral Combat Talents (level 15).Rank 1: Increases damage done by your Swipe ability by 10% and reduces the chance enemies have to detect you while Prowling as if you were 1 level higher.Rank 2: Increases damage done by your Swipe ability by 20% and reduces the chance enemies have to detect you while Prowling as if you were 2 levels higher.Rank 3: Increases damage done by your Swipe ability by 30% and reduces the chance enemies have to detect you while Prowling as if you were 3 levels higher.Changed from Classic (was 5 ranks, now 3). Classic rank 1: Increases threat caused in Bear and Dire Bear Form by 3% and reduces the chance enemies have to detect you while Prowling.
What changed from Classic
Classic rank 1Increases threat caused in Bear and Dire Bear Form by 3% and reduces the chance enemies have to detect you while Prowling.
WoW Forever rank 1Increases damage done by your Swipe ability by 10% and reduces the chance enemies have to detect you while Prowling as if you were 1 level higher.
Alsowas 5 ranks, now 3.
Beta build history
Around it in the Feral Combat tree
Every Feral Combat talent 19
From the WoW Forever beta client, checked in game with reader reports. Put points in Feral Instinct in the Druid calculator, read every Druid talent in words (Balance and Restoration too), or see the racials, changed class abilities and Legacy perks.