Improved Backstab
Talent · CombatRemoved
Improved BackstabRank 1/3
Increases the critical strike chance of your Backstab ability by 10%.
Not in Forever
News
Classic vs Forever
Every talent and spell WoW Forever added, changed or removed, with the Classic tooltip next to the new one.
Rogue changes
Assassination
Improved GougeMoved from CombatChangedTalent · Assassination
Remorseless AttacksAfter killing a non-trivial enemy, gives you a 40% increased critical strike chance on your next Sinister Strike,…ChangedTalent · Assassination
MaliceIncreases your critical strike chance with all attacks and Poisons by 5%.ChangedTalent · Assassination
MurderIncreases all damage dealt by 4% against Humanoid and Giant targets.ChangedTalent · Assassination
Improved Expose ArmorReduces the Energy cost of your Expose Armor ability by 10, and refunds 2 Combo Points when cast with 5 Combo Points.ChangedTalent · Assassination
LethalityMax rank 30%to 20%ChangedTalent · Assassination
Vile PoisonsColumn 2to 1MovedTalent · Assassination
Cold BloodRow 5to 4ChangedTalent · Assassination
Improved PoisonsIncreases the chance to apply Poisons to your target by 10%, and gives Poison applications a 50% chance to not consume a…ChangedTalent · Assassination
VigorRow 7to 5; Ranks1to 2ChangedTalent · Assassination
MutilateInstantly attacks with both weapons for 75% weapon damage plus an additional 17 with each weapon. Damage increased by…NewTalent · Assassination
Improved Kidney ShotRanks 3to 2ChangedTalent · Assassination
Seal FateColumn 2to 3; No longer needs Cold BloodChangedTalent · Assassination
VenomFinishing move that increases the damage of your Poisons by 30% and your chance to apply Poisons by 10%. Lasts longer…NewTalent · Assassination
EviscerateRank 6 99to 93;143 damageto 137 damageChangedSpell · Assassination- Expose ArmorMax rank
340 armorto 450 Armor;680 armorto 900 ArmorChangedSpell · Assassination 
RuptureMax rank 272 damageto 159 damage;380 damageto 222 damageChangedSpell · Assassination
Combat
- Improved EviscerateMax rank
15%to 20%; Moved from AssassinationChangedTalent · Combat 
Puncturing WoundsIncreases the critical strike chance of your Backstab by 30% and your Mutilate by 15%, and gives Backstab a 45% chance…NewTalent · Combat
DeflectionMax rank 5%to 6%; Ranks5to 3ChangedTalent · Combat
PrecisionMax rank 5%to 3%; Ranks5to 3ChangedTalent · Combat- Improved BackstabIncreases the critical strike chance of your Backstab ability by 30%.RemovedTalent · Combat
Classic Forever 
EnduranceReduces the cooldown of your Sprint and Evasion abilities by 60%.ChangedTalent · Combat
Flawless ExecutionReduces the Energy cost of your Eviscerate ability by 10.NewTalent · Combat
Dual Wield SpecializationMax rank 50%to 25%ChangedTalent · Combat
Dagger SpecializationNow part of Hack and SlashRemovedTalent · Combat
Blade FlurryIncreases your melee attack speed by 20% and your melee attacks strike an additional nearby opponent. Lasts 15 sec.ChangedTalent · Combat
Hack and SlashWas Sword SpecializationChangedTalent · Combat
Fist Weapon SpecializationNow part of Hack and SlashRemovedTalent · Combat
Mace SpecializationNow part of Hack and SlashRemovedTalent · Combat
Weapon ExpertiseReduces the chance for your attacks to be Dodged or Parried by 2%.ChangedTalent · Combat
AggressionIncreases the damage of your Sinister Strike, Backstab, and Eviscerate abilities by 6%.ChangedTalent · Combat- GougeCauses 75 damage, stops your attack, and incapacitates the target for 4 sec. The target must be facing you. Any damage…ChangedSpell · Combat
Subtlety
CamouflageMax rank 5 secto 6 sec; Row2to 1ChangedTalent · Subtlety
Master of DeceptionRanks 5to 3ChangedTalent · Subtlety
OpportunityMax rank 20%to 10%; Ranks5to 2ChangedTalent · Subtlety
SetupMax rank 45%to 100%; Row4to 2ChangedTalent · Subtlety
ElusivenessReduces the cooldown of your Vanish and Blind abilities by 90 sec.ChangedTalent · Subtlety
Dirty TricksReduces the Energy cost of your Sap and Blind abilities by 50%.NewTalent · Subtlety
Improved AmbushRow 3to 2MovedTalent · Subtlety
Sleight of HandReduces the chance you are critically hit by melee and ranged attacks by 2% and increases the threat reduction of your…RemovedTalent · Subtlety
InitiativeMax rank 75%to 100%ChangedTalent · Subtlety
Ghostly StrikeA strike that deals 125% (180% if a Dagger is equipped in your Main Hand) weapon damage and increases your chance to…ChangedTalent · Subtlety
Improved DistractIncreases the radius of your Distract ability by 5 yds, and further reduces the Stealth detection of distracted enemies…NewTalent · Subtlety
Heightened SensesRow 5to 4ChangedTalent · Subtlety
Premeditation10 secto 20 sec; Row7to 4; No longer needs PreparationChangedTalent · Subtlety
Serrated BladesCauses your attacks to ignore 9% of your target's Armor and increases the damage dealt by your Rupture ability by 30%.ChangedTalent · Subtlety- Improved SapGives you a 90% chance to return to stealth mode after using your Sap ability.RemovedTalent · Subtlety
Dirty DeedsColumn 3to 1ChangedTalent · Subtlety
HemorrhageColumn 4to 3ChangedTalent · Subtlety
QuietusYour Sinister Strike, Ghostly Strike, and Hemorrhage abilities cause 10% more damage against targets below 35% health.NewTalent · Subtlety
CutthroatYour Backstab has a 15% chance to cause your next Ambush within 10 sec to not require Stealth.NewTalent · Subtlety
DeadlinessIncreases your Attack Power by 10%.RemovedTalent · Subtlety- Thousand CutsWhen your Rupture ability deals periodic damage, the Energy cost of your next Hemorrhage or Backstab ability within 10…NewTalent · Subtlety
- SapIncapacitates the target for up to 45 sec. Only works on Humanoids that are not in combat. Any damage taken will break…ChangedSpell · Subtlety
- DistractThrows a distraction, attracting the attention of all nearby enemies and reducing their Stealth detection as if they…ChangedSpell · Subtlety
Lockpicking
Poisons
Crippling PoisonCoats a weapon with poison that lasts for 30 minutes. Each strike has a 30% chance of poisoning the enemy, slowing their…ChangedSpell · Poisons- Instant Poison
19 to 25to 13 to 17;40to 60ChangedSpell · Poisons 
PoisonsYou can create and mix poisons, with both found and storebought ingredients.ChangedSpell · Poisons
Mind-numbing Poison50to 75ChangedSpell · Poisons- Instant Poison II
30 to 38to 20 to 26;55to 85; Ranks1to 2ChangedSpell · Poisons 
Deadly Poison36to 24;60to 90ChangedSpell · Poisons
Wound Poison55to 67ChangedSpell · Poisons
Blinding PowderCreate the reagent for the Blind ability.ChangedSpell · Poisons- Instant Poison III
44 to 56to 29 to 37;70to 105; Ranks1to 3ChangedSpell · Poisons - Deadly Poison II
52to 36;75to 115; Ranks1to 2ChangedSpell · Poisons - Mind-numbing Poison II
75to 115; Ranks1to 2ChangedSpell · Poisons - Wound Poison II
75to 92; Ranks1to 2ChangedSpell · Poisons - Instant Poison IV
67 to 85to 45 to 57;85to 1800; Ranks1to 4ChangedSpell · Poisons - Deadly Poison III
80to 56;90to 135; Ranks1to 3ChangedSpell · Poisons - Wound Poison III
105to 128; Ranks1to 3ChangedSpell · Poisons - Crippling Poison IIRanks
1to 2ChangedSpell · Poisons - Instant Poison V
92 to 118to 62 to 80;100to 150; Ranks1to 5ChangedSpell · Poisons - Mind-numbing Poison III
100to 150; Ranks1to 3ChangedSpell · Poisons - Deadly Poison IV
108to 72;105to 160; Ranks1to 4ChangedSpell · Poisons - Wound Poison IV
135to 165; Ranks1to 4ChangedSpell · Poisons - Deadly Poison V
136to 92;105to 180; Ranks1to 5ChangedSpell · Poisons - Instant Poison VI
112 to 148to 76 to 100;115to 175; Ranks1to 6ChangedSpell · Poisons
What changed during the beta, update by update, is in the patch notes. To try a build, use the talent calculator.