WTF happend to Feral AP?

[:1]Saw most of the patch notes recently ... dont recall one removing feral AP

But apparently its gone now. So ... is it just based off the DPS of a weapon now? Or do speed / top end dmg now effect things?
Dps of your weapon is converted to melee damage
For eg if your weapon has 400 dps
it converts to 400 dmg per cat melee (base 1s)
or 1k dmg per bear melee (base 2.5s)
When did this change?