(spec found here: http://us.battle.net/wow/en/forum/topic/2369743517#2 )
Notable Talent Changes:
0/2 Serrated Blades: You won't Rupture the Tendons during this fight given a 19s DPS duration and 100% Find Weakness up-time. These two points are diverted to filling out Initiative and a point in Enveloping Shadows.
2/2 Initiative: This will allow a 100% chance at 4CP Eviscerates after each Ambush.
1/3 Enveloping Shadows: This will help with the AE damage of the encounter and is the best place to put your 31st talent point as there are no DPS alternatives.
1/3 Precision: Given the special circumstance of reforges (see below) you will have an unusually high amount of potential Hit Rating. So long as you can maintain a minimum of 8% Hit (Special Hit Cap: 721 Hit Rating) a point may be safely diverted to Coup de Grace as a DPS increase.
3/3 Coup de Grace: An increase in your burst DPS due to the amount of CP generation during Tendon phase, and of particular worth due to the 100% FW up-time.
Notable Glyph Changes:
Hemorrhage: Unless there is no feral (or other source of a Bleed effect) there is not much room for a Hemorrhage in the tight rotation required by the Tendon phase but if you Premed the 2nd Ambush not the first (since you have 2/2 Initiative) you can use a single glyphed Hemo to put your first Eviscerate to 5CP. If there is no other bleed source, one rogue will glyph have to glyph Hemo to apply a Bleed effect to activate all rogue's Sanguinary Veins.
Shadow Dance: While a Bleed effect is present (or for all other rogues than the Hemo designate) Shadow Dance is a valuable alternative to increase the duration of FW.
Eviscerate: Glyph of Slice and Dice is not expressly necessary. With perfect timing the base duration is sufficient for the entire phase and Eviscerate would then therefore be a DPS increase. Left to individual discretion on personal latency and execution.
Tricks of the Trade: This Glyph is specifically omitted. Tricks will be used before the DPS burn begins, as such the energy cost is irrelevant. Therefore the additional 5% to target is worth significantly more.
Notable Gear Changes:
Kiroptyric Sigil: (Equip: Increases your Haste by 458 [3.58%] Use: Increases your Agility by 2290 for 15sec. [1:30min CD]) This trinket has both a CD and duration that almost exactly mirror the frequency and duration of the Tendon phase. For this reason the large amount of Agility afforded by it's on-use effect makes it the most valuable trinket available. Cataclysmic Gladiator's Badge of Conquest could be an alternative if insufficient VP is available to purchase the superior Sigil. Sigil is best paired with Wrath of Unchaining due to fast stacking and constant effect. Vial of Shadows or Starcatcher's Compass can be used but their ICDs must be stringently tracked to 'force' procs while the Tendon is exposed or significant DPS will be lost.
Notable Reforge Changes:
Tendons cannot dodge, as such reforging away from Expertise is of prime importance. This allows for higher than normal levels of Hit and Mastery. This excess Hit Rating can be sufficient to allow a Talent Point to be diverted from Precision to Coup de Grace for increased Eviscerate damage. 8% Melee Hit Chance must be maintained for this to be viable. As you can still miss the Tendons.