There really hasn't been any ground shaking rogue changes in Wrath.   Even the talents are not fully functioning.   We're apparently last on the development cycle.   Hopefully at least.    But there's a few changes to note that just happened:

• Gouge does not award a combo point anymore.
• Mace Specialization (Combat) no longer stuns enemies, and instead increases critical damage bonus by 2/4/6/8/10%.

Meh no big deal here either.   Though losing that mace stun is a bit of a surprise.   This mace is a boost to pve damage, but don't think it's closes the gap much on Sword Spec or anything. 

But here's where the talk gets more exciting, the Glyphs:

• Glyph - Sap - Increases the duration of Sap by 10 sec.
• Glyph - Evasion - Increases the duration of Evasion by 5 sec.
• Glyph - Backstab - Increases the damage dealt by Backstab to stunned and incapacitated targets by 20%.
• Glyph - Rupture - Increases the duration of Rupture by 5 sec.
• Glyph - Eviscerate - Increases the critical strike chance of Eviscerate by 10%.
• Glyph - Expose Armor - Increases the duration of Expose Armor by 10 sec.
• Glyph - Feint - Reduces the energy cost of Feint by -10.
• Glyph - Shiv - Reduces the energy cost of Shiv by -5.
• Glyph - Deadly Throw - Increases the range on Deadly Throw by 5 yards.
• Glyph - Hemorrhage - Increases the damage bonus against targets afflicted by Hemorrhage by 40%.
• Glyph - Adrenaline Rush - Decreases the cooldown of Adrenaline Rush by 60 sec.
• Glyph - Gouge - Reduces the power cost of Gouge by -10.
• Glyph - Slice and Dice - Increases the duration of Slice and Dice by 3 sec.
• Glyph - Sprint - Decreases the cooldown of Sprint by 60 sec.
• Glyph - Garrote - Increases periodic damage dealt by Garrrote by 45%, but decreases the duration by 3 sec.
• Glyph - Ambush - Increases the range on Ambush by 5 yards.
• Glyph
  - Ghostly Strike - Increases the damage dealt by Ghostly Strike by 50%
  and the duration of its effect by 4 sec., but increases its cooldown by
  10 sec..
• Glyph of Blade Flurry - Reduces the energy cost of Blade Flurry by 100%.
• Glyph of Preparation - Decreases the cooldown of Preparation by 2 min.
• Glyph of Crippling Poison - Increases the chance to trigger Crippling Poison by 10%.
• Glyph of Sinister Strike - Your Sinister Strike critical strikes have a 40% chance to add an additional combo point.

So my review of this:

• Sap - PvP or better CC in the 5 mans
• Evasion - The best 15 sec of a rogue's life becomes 20 sec!
• Backstab - PvP, soloing, 5 mans.  Doubt raid stuff can be stunned much, maybe some trash.
• Rupture - It's a small boost to rupture.   Not really all that impressive, but maybe better for pvp when you wanna keep bleeds on someone
• Evis - Decent maybe for Mulilate folks, but other glyphs prob outshine this
• Expose Armor - Helps keep it up.   Definitely good for pve if you don't need/have the Sunders
• Feint - Heh, not even on the bars anymore.   
• Shiv - Meh, pvp i guess
• Deadly Throw - More pvp goodness
• Hemo - Hum, I think this means it increases the hemo debuffs effectiveness, so that'd make it do 105 more physical dmg at max rank in Wrath.    Prob still a small raid buff though compared to everything else
• AR - Pretty decent.   Depending on fight can squeeze an extra AR in.
• Gouge - PvP
• SnD - Huh so kinda like the 2 pc T4.   Well it's nice bonus too.
• Sprint - Mostly pvp but some pve movement applications can help
• Garrote - Well improves the only finisher sword pve rogues use anyways.   PvP wise, it costs you if your intention was to keep a bleed on.
• Ambush - Huh, very interesting.   Start that ambush further away
• Ghostly Strike - Well maybe pvp, or rogue tanking uses.
• BF - Freebie with it, so very good.
• Prep - More pvp
• Cripp - PvP again
• SS - Actually pretty good.  Should let you add another finisher over time.