Rogues are a class that lends itself extremely well to PvP, and even six years in, rogues pouncing on unsuspecting prey is one of the enduring visions (and fears) of the game. Rogues play entirely differently from most other classes because of their ability -- and need -- to utilize stealth. The only other spec that has a similar playstyle are feral cat druids.
Rogues always get a lot of goodies for PvP, and the new world isn't any different. It's a new game, though, and the stunlock as we know it is gone. It's been comatose for a long time, but shared diminishing returns put a final nail stunlock's coffin. There are abilities that steer the rogue to do more fanciful things, though. I mentioned before how Recuperate is such a game-changer, allowing rogues to keep up with other classes in a higher-stamina world. Longer combat also means more opportunities to use all those cooldowns rogues are known for -- but it also means they'll need to time it even better now, because blowing all available cooldowns for one big burst does not necessarily translate to killing an opponent.
Anyway, with about a week left to go before Cataclysm goes live, we'd better get this whole thing sorted out, so let's get right into what rogues should pick up for PvP.