Blizzard released the updated mathematics behind the Feral buffs, and while MMO-Champion is operating under the assumption that these are "temporary 4.0 buffs which will be reverted at 85 in Cataclysm," they are probably more likely permanent buffs for Ferals. MAYBE other classes will have their numbers toned back, but Ferals needed the buffs at 85, so it is likely that our numbers will stick.

* Rip now scales from 18/37/55/74/92% of Attack Power depending on combo points, up from 8/16/24/32/40%.
* Ferocious Bite now scales from 10.9/21.8/32.7/43.6/54.5% of Attack Power depending on combo points, up from 7/14/21/28/35%.
* Rake now causes scales from 2% of Attack Power for bleed damage, up from 1%. Now scales from 42% of AP for additional bleed damage over 9 sec, up from 18% of AP.
* Mangle additional damage has been increased from 726 to 1136.
* Vengeance - Entering Cat Form will cancel this effect.

So, before the latest updates, let's look at the tooltip calculations for each of the updated abilities:

Rip (just looking at 5pt) - (501 + 0.40 * AP) damage over 16 seconds.
Ferocious Bite - (1570 + 0.35 * AP) - (1710 + 0.35 * AP) damage.
Rake - (361 + AP * 0.18) damage over 9 seconds.

So, let's say that after the Feral Attack Power removal we had something like 5k attack power (for easier maths). Then we would have the following:

Rip: ~2500 damage over 16 seconds (~313 damage per tick).
Ferocious Bite: ~3350 damage.
Rake: 1261 damage over 9 seconds (~400 damage per tick).

You can see why Ferals complained... our finishing bleed was doing less than Claw. Let's look at the new maths:

Rip (just looking at 5pt) - (501 + 0.92 * AP) damage over 16 seconds.
Ferocious Bite - (1570 + 0.545 * AP) - (1710 + 0.545 * AP) damage.
Rake - (361 + AP * 0.42) damage over 9 seconds.

With the same 5000 attack power, we would see damage like the following:

Rip: 5101 damage over 16 seconds (~638 damage per tick).
Ferocious Bite: ~4325 damage.
Rake: 2461 damage over 9 seconds (~820 damage per tick).

So there ya go... they roughly doubled our bleed damage. Keep in mind, also, that I haven't calculated in Mangle (30%), Mastery (~45% in my gear), talents (2 more ticks on Rake), or glyphs (15% more Rip damage), so these numbers are designed to look low.