The more things stay the same, the more things stay the same.
So the lack of patch notes relating to rogues might make you think that nothing has changed for rogues in 1.3. Well, you'd be right. Nevertheless, with Hammerknell set to start "soon" and people wanting to get geared up to clear Greenscale, here is my take on the top 3 DPS specs for Rogues.
Sabdancer 26 Sab / 21 Sin / 19 BD
Good old melee sab is going great guns this patch, with the change to Deadly Dance's interaction with charges streamlining the rotation. In my (still) mostly T2 gear with some raid gear, my spike charge crit ticks for 2.2k and Shrapnel crit ticks for 1k. The rotation is more complicated than the standard saboteur, but the damage is also better.
3x Spike > Puncture > Deadly Strike > 2x Spike > Detonate
5x Shrap > Detonate
You can use Backstab if you want to, but I prefer Puncture because of the positional nature of Backstab. There's also not much difference in energy because a 2 Point Detonate costs less energy than a 1 point detonate that you would do with Backstab. Of course, if you prefer ranged sab, there is always the standard saboteur.
Bladedancer Tribrid 27 Bladedancer / 21 Nightblade / 18 Asssassin
Still going strong, the BD tribrid deals considerable damage to a single target. It's simple to play, to allow for good raid awareness and is extremely competitive for the top spot on the damage meter. More info is available in my complete writeup.
Hoko's Nonsense Spec 26 Ranger / 21 Bladedancer / 19 Assassin
I tested this and had very good results. It's bizarre running a melee ranger spec and you do have to run in and out of melee range to use Head Shot, but it deals very good DPS and may wind up being the best DPS of all, depending on your gear. You can read more about the spec in his thread on the rift forums. Note that my spec varies slightly from his. I find having instant-pet is too valuable to go without.
I was lagging too bad to give a good test to Hoko's spec this week (thanks Trion for those server mergers by the way) so next week will be the test on that one, hopefully.
Also, Guardians now massively outnumber Defiants on Deepstrike. Because sometimes being able to do Raid Rifts was too simple.