New in Cata!

Well, I played WoW in tbc and wotlk, everything that changed was ok, I'm plying rogue.. could someone help me to play a new rogue from 1 to 85, which skill is preferred for levelling now, which skill is "the best" in raids? (i know, it's all how u ply yor class, i was pretty good with mutilate in PvE and sub in PvP)

so after all: for leveling: conbat or sub (or is muti better now?)

in high level: which tree in PvE? (im pretty much PvE): Muti, Combat, or is even Sub now competive?

I'd like to try everythin, but right now on a pserver im pretty much No. 1 PvE rog with sumthin like 112112112 (thats my "rota") ^^

any changes, or can i just start levelling?

There isn´t so much that have changed for the rouge skills.
At the moment maybe you should play combat at level 85 in PvE and for leveling you should use sub.

There have been changed much in the leveling way, but you will see it by leveling you´re character.