There's also a heroic version of Ancient Petrified Seed. It doesn't have the "Requires Reverered with" tag, and I really don't know why or if it's in the game.
Maybe they originally wanted the trinket to drop from a boss and already scraped that, or it's some weird mix of reputation reward and heroic boss drop, though we haven't seen any of that type yet.

Blizzard had initially said, when first introducing the Daily Quest hub's "faction", that they were not actually a faction and you would not gain rep with them. So that is probably why a heroic version exists.

Well, they said that Avengers of Hyjal rep wouldn't be pushed via the daily hub, not that it was no real faction at all. They also said it'd be similar to the Ashen Verdict, but without the trash mobs farming part of it. So most likely we'll be seeing reputation only for boss kills after a certain level (think of Molten Core) or Brood of Nozdormu which involved some special mobs, quests or loots.

http://us.battle.net/wow/en/forum/to...85?page=17#340
http://us.battle.net/wow/en/forum/to...85?page=17#322

Your Math is slightly flawed 16.6% is the correct amount of the buff to the proc.
The current average damage if you have 40% critical strike is 120% of 5000 or 6000. In 4.2 this will change to 140% of 5000 or 7000. When you do a percent difference calculation (7000-6000)/6000 you end up with 16.66... percent.

Now that said your comment on the trinkets EP value not increasing by as much I completely agree with.
at an EP value of 2.7 for agility and 467 for the current proc the increase could be determined as follows:

{[(1.166*467)+(2.7*321)]-1333.7}/1333.7 or a 5.8% buff to the EP of the trinket for combat.

{[(1.166*346)+(2.6*321)]-1180.97}/1180.97 or 4.8% buff to the EP of the trinket for Assassination.

Now this all changes if your critical strike is lower than 40%(which is probably likely for people who are using this trinket).
It would actually be a greater buff in that case.

For example a combat rogue with 30% critical strike would have the proc on the trinket buffed by:
(7000-5750)/5750 = 21.7%

In summation, the change to Darkmoon Card: Hurricane is from a scaling trinket to a non-scaling trinket. This results in a decent buff in the trinket for poorly geared rogues and a small buff in the trinket for well geared rogues. Either way its rank among trinkets seems to be affected only slightly if at all.

Many item updates from yesterday, including a few name changes and the addition of heroic versions of all items. It's curious that some faction rewards have both 378 and 391 versions; is there any precedent for this? I would venture a guess that the upgrades are bought with an item from daily quests or some such method. It would also appear that Ragnaros is a tier slightly higher than 12, as Sinestra is currently (but with the inclusion of a normal mode). Now that loot is fairly final, we can guess that iLevels are as follows:

365 - New crafting base tier, seasonal and quest rewards
378 - T12 normal
384 - Normal Ragnaros
391 - T12 heroics
397 - Heroic Ragnaros

One final note is Aella's Bottle is quite an interesting trinket if it works the way I think it will. It would seem you're able to store a charge (multiple charges?) in the bottle every 3 minutes for use when you want it. Sadly, the use is crit and would average far below our current trinkets (if it's a single charge maximum), but could have some interesting uses for back stab burn phases coupled with our new set bonuses. This is highly speculative, so until we know more it's best to just keep an eye on it for now.

EDIT: I should clarify that some crafted items do spill over to 378 (as pointed out below), but 365 would be the new base for this tier.

Regarding crafting item ilevels, it appears that armor is ilevel 378, for example: Pattern: Treads of the Craft and Pattern: Clutches of Evil.

This replicates the tier 11 model, with [Assassin's Chestplate] being the same ilevel as [Wind Dancer's Tunic](normal).

However, the weapons do look to be 365.

Sounds to me the Equip effect is just a vanity effect, and the on use effect is completely separate from it.

The weapons don't require any Living Embers to make.

Riccket's Magnetic Fireball is now listed with the same two effects than those of Aella's Bottle.

The trigger for Meteor Magnet (with a 20% proc chance) is directly linked to Ricket's Magnetic Fireball. Rather than the former implementation of Ricket's (~420 damage on a 3' cool down), it'd make a lot more sense for the Bottle to be the 'on use' crit and Ricket's to call a low damage meteors, or to stack them to be released every 2-3 minutes. Personaly I'm leaning towards the non stacking version of it, mainly because the only clue leading to stacking is the 3' cd (2' on Ricket's) seen only on mmo-champion but not on wowhead.

Either way I expect an update to both trinkets seeing that the 'on use' effect has no cool down listed.

From the May 26th PTR update:

- Cloak of Shadows cooldown is now 2 minutes, up from 90 seconds. In addition, Cloak of Shadows is no longer on the global cooldown.
- Combat Readiness and Cloak of Shadows now share a cooldown.

Assassination:
- Assassin's Resolve damage bonus has been increased to 20%, up from 15%.
- Vile Poisons now increases poison damage by 12/24/36%, up from 7/14/20%.

Combat:
- Savage Combat now increases attack power by 3/6%, up from 2/4%.
- Vitality now increases attack power by 30%, up from 25%.

Subtlety:
- Elusiveness now reduces the cooldown of Cloak of Shadows by 15/30 seconds, up from 10/20, and now also reduces the cooldown of Combat Readiness by 15/30 seconds.
- Sanguinary Vein damage to bleeding targets has been increased to 8/16%, from 5/10%.

The Cloak/Combat Readiness change is a pretty massive PVP nerf. It wouldn't be that bad, except Combat Readiness is an entirely defensive cooldown, while Cloak is a strategic cooldown.

The problem with the change is that Cloak is both an offensive ability (snare break, instant CC counter during a kill attempt) and a defensive counter (strip debuffs, take 40% less physical damage). Virtually the only time you would elect to use Combat Readiness over Cloak would be if you're being focused versus something like a warrior/feral druid team. If there's anyone with magic or curse debuffs controlling or damaging you, Cloak is going to the flatly-better option. The net effect here is that Combat Readiness will be effectively unused - you never use it in PVE, and if you have to choose between CR and Cloak in PVP, you'd be a fool to choose CR in almost any conceivable situation.

The damage dial tweaks are sort of hilarious, though. I have no math validation, but it feels like Assassination is going to be the clear PVE spec of choice if those numbers go live, barring gimmick cleaves like Magmaw or Halfus in 4.2.

The thing that sticks out in my mind is Heroic V&T. While I know that it will be "old content" as soon as these changes are implemented, it will make staying in the Twilight Realm the entire fight noticeably harder for many raids that try and go back for it. Be it achievements, mounts, fun, whatever. Luckily, Sub has a DPS boost coming (albeit tiny), and there's the inherent DPS inflation due to better gear from Firelands, but it's definitely going to change a number of strategies for anyone who wants to try it post-4.2.

For the Cloak/CR change, I'm going to be honest and say that I don't really PvP, but the defensive CD nerf seems kind of weird. Combat Readiness and Cloak are essentially mutually exclusive in PvP, and Combat Readiness just doesn't have that much use to it unless you know you're going to be burst down by physical damage based specs. It's just a weird and rather insignificant change in comparison to the lengthened CD to cloak.

It looks like it's going to be roughly 5% increase to Assassination, while Combat will get something less. I haven't done any numbers on Combat since the impact is gear dependant, but I would expect it to be close to 5%, or maybe a little less.

I'm going to hold to the hope that this is only their first attempt to try some changes for the patch, and that they will change these numbers around again. I mean, I could go on about what I would rather see done to improve how the class functions, but I'd rather not wishlist the class.

EDIT: I failed and confused two things, 5% as Aldriana noted looks right.