WoW Insider’s got the full list of set bonuses: I’ve replicated the feral ones below.
- Feral, 2P — While Berserk is active, Savage Defense absorbs are 100% larger, and your Blood in the Water talent now causes Ferocious Bite to refresh the duration of your Rip on targets with 60% or less health.
- Feral, 4P — Frenzied Regeneration also affects all raid and party members, and your Stampede talent now grants two charges after using Feral Charge (Cat).
The Feral 2piece is a significant buff to DPS for cats. 2/2 BITW is worth roughly 1.6% DPS currently (yes, it really is that lackluster); boosting the BITW threshold to 60% will more than double its effectiveness, resulting in a overall ~2% buff to DPS. It’s roughly equivalent to the 2Pt12. The bear version is good mitigation and essentially gives bears another cooldown.
The Feral 4piece is highly highly situational for cat DPS. For fights like Ragnaros where adds have to DIE NOW, it’s amazing. For sustained DPS on a single target, it’s pretty worthless. I wouldn’t be surprised to see 2p/2p for a while. Jury will remain out. More important, however, is AoE Frenzied Regeneration. This is a HUGE raid cooldown if it includes the healing; my guess, however, is that it’ll only include the +15% health (and of course, its a DPS loss since we’re stuck in bear for the duration). This makes it a slightly weaker but longer-lasting Rallying Cry. It will be PRICELESS, however, if it works solely on other rage-based classes (FuryWar: “WTF where’s my rage?”). This will give DPS ferals two significant raid-wide CDs, which is a huge dollop of utility.
Feel free to speculate in the comments!
EDIT: Also see Reesi’s take.