patch 2.3. The feral talent Heart of the Wild, will be changed to gain +10% attack power in cat form rather than +20% strength as shown in the current version above. As Vorox notes for us in his forum post this is a buff for feral druids.
It may be a nerf for those druids who have stacked as much strength as possible to the exclusion of other stats, but especially considering that they plan to raise the attack power on items that buff druids' attack power while shapeshifted, having this talent to make them even more powerful seems pretty nice to me. It also makes agility scale even better for cat druids than it did before, and in many cases it enables us to get more bonuses from many buffs and items (such as Blessing of Might, and... rogue gear!).
For the mathematically inclined amongst you, here is the formula for calculating your new buffed-up attack power from the original poster Vorox (who translated from German): (Current AP - (Strength in cat form - Strength in caster form)*2)*1.1