To start off I want to say that this guide is being made to assist with gearing and talent setup. I am not going to explain your skills or how to fight certain classes. You have reached level 85 on your rogue I hope you know how to use your skills.
Currently there are two viable PvP specs for rogues (a combat rush down with a 8.9 second kidney is good but not viable imo) at the moment. Subtlety and assassination. In this guide I will cover Subtlety.
Subtlety offers great mobility and great survivability. Maybe less now then it did before with the removal of evasion from preparation but still more than any other spec. 4.06 offered a few buffs that I believe will make subtlety the go to rogue spec. During a dance with a trinket/eng gloves/unheeded proc you will have great damage and great burst.
You want to use a slow dagger mh (1.8) speed and a fast dagger (1.4) oh. You should use crippling on your OH and either wound/mind numbing on your MH. Thrown can be good with any poison but probably best with crippling. Using normal throws with crippling to slow while rooted. Agility and resilience are your two best stats.
Specs:
The highest possible dps spec:
http://www.wowhead.com/talent#fMhfZZsGfcdu0Rho:zmaiks
Disadvantages:
No Imp Recoup
1/2 Nightstalker
Not the BEST survivability
The best tanking spec:
http://www.wowhead.com/talent#fMhdZb...dcRho:azmiskzV
Disadvantages:
1/3 Puncturing Wounds
No Waylay
1/2 Nightstalker
Not the BEST damage
The best balanced spec: (imo)
http://www.wowhead.com/talent#fMhcZbZfGscdu0Rho
Disadvantages:
No quickening
1/2 Waylay
Best mix of damage and survivability
Notes on specs:
With quickening you get a 15% speed boost to run speed. With a boot enchant you get only a 8% increase.
Quickening does benefit from recoup.
Glyphs:
Shadow Dance / Backstab/ Hemo
Garrote / Prep / Blind
Gearing:
You need to have 5% hit for your specials not to miss. Any above doesn't hurt because of NE but you want to stay close to 5%.
You should buy hit pvp bracers, ring, and belt (of accuracy). That will put you at 5% with a few gems/reforging/ and a weapon chain. Your other off pieces should be (of cruelty). With the neck you can choose between mastery and expertise. Both are probably a toss up. It is up to you. Reforge any haste/mastery to crit if you are over 5% or to hit if you are under 5%,
If you have all epic items you can get buy with using hit bracers and hit ring (of accuracy) and gemming for hit. You can buy the of cruelty epic belt.
Resilience is good. Very good. The times of using PvE gear in PvP is mainly over besides the exception of a few items.
Trinkets:
Currently there are a few options. It depends on a mixture if you are human/have engineering. You can not use an on use trinket to stack with the 480 agi glove enchant from engineering. Ideally, you want to be able to have unheeded proc'd and an on use trinket/eng glove up for a dance for extra damage.
http://www.wowhead.com/item=60807 for Non-Humans
http://www.wowhead.com/item=59520
http://www.wowhead.com/item=61033 for Non-Engineers to be used during Shadow Dance
http://www.wowhead.com/item=61047
Professions:
Best two professions currently are engineering and jewelcrafting.
Glove enchant - Synapse Springs
Jewelcrafting for 67 agi / 67 resil gems http://www.wowhead.com/item=52258 / http://www.wowhead.com/item=52267
Gems:
Red Socket: 40 agi
Yellow Socket: 20 agi 20 resil - 20 agi 20 crit - 40 resil
Blue Socket: 20 agi 20 hit - 20 agi 30 stam
Meta Gem: 54 agi +3% crit dmg
Cogwheels: 208 Crit - 208 Resil
Personally, if you choose to use a PvE trinket or unheeded I think you should gem resil. You are losing out on resilience by not using a pvp trinket.
Ignoring socket bonuses and gemming all 40 agi is also debatable.
Enchants:
Head: http://www.wowhead.com/item=68769/ar...icious-agility - Can be bought for 1k honor or 40 Tol Barad Marks
Shoulder: http://.wowhead.com/item=68774 - Can be bought for 2k honor or 80 Tol Barad Marks
Back: http://www.wowhead.com/spell=60663 or http://www.wowhead.com/spell=74247
Chest: http://www.wowhead.com/spell=74214 or http://www.wowhead.com/spell=74250
Bracer: http://ptr.wowhead.com/spell=96264
Gloves: http://www.wowhead.com/spell=74198 or http://www.wowhead.com/spell=44529
Legs: http://www.wowhead.com/item=56550
Boots: http://www.wowhead.com/spell=74213 with Quickness / http://www.wowhead.com/spell=74252 w/o Quickness
MH: http://www.wowhead.com/spell=74246 or http://www.wowhead.com/spell=74223 if you don't have 10k gold
OH: http://www.wowhead.com/item=55057
I will be adding more links and more information to this in the next few days. Work in progress. And of course this is my opinion. Other things might be better in your opinion. If you have a suggestion for the guide feel free.