Note: This is a 4.0.1 FAQ. It is not updated for 4.0.3. Nor will it be, since I don't find it worth my time to reoptimize for 2 weeks of non-progression raiding. In fact, I think I'll lock this thread as its not really very useful anymore.
Note: We don't care about your anecdotes based on 5 minutes with a training dummy. They're completely meaningless. Stop posting them.
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Since many of you seem to be looking for gear/spec/etc. information about 4.0.1 (i.e., the period where we have the new talent trees and mechanics but are still raiding level 80 content), I figured I'd try to compile answers to the commonly asked questions.
Note: No one has done truly detailed theorycraft on any of this. In some cases its little more than educated guesswork. The information should thus be considered as somewhat less reliable than what you might normally expect on these forums, but I figure in this case even educated guesswork is better than nothing.
What's the recommended Assassination spec?
Probably
this, or perhaps the same thing with 2/3 RS and 3/3 Precision. The point in Deadly Brew can also be moved if you happen to like some other filler point better. Cycle is 4+ finishers, keep Rupture up, otherwise Envenom. Prime Glyphs are sort of anyone's guess, but if it were me I'd try Mut/BS/Rupture.
What's the recommended Combat spec?
Probably
this. The points in Imp Sprint and Blade Twisting can be moved to your favorite filler points. Cycle is keep SnD up, Rupture if its down, Evis otherwise. Prime glyphs are probably SS/AR/Rupture.
What's the recommended Sub spec?
Probably
this. The point in Enveloping Shadows is filler and can be moved to suit your fancy. And I'm sort of guessing on the merits of Lethality and Precision relative to CdG. Cycle is keep Hemo up, otherwise Backstab, keep SnD + Recuperate up and spam Eviscerates to roll Rupture. Prime Glyphs... Backstab for sure, and after that your guess is as good as mine.
Okay, which of those is best?
Good question. We don't know.
But...
We don't know. Stop asking.
What stats are good?
Agi is probably your best stat. Haste is probably pretty good as well. You will likely be short on hit. Current theory is that you want to get all socket bonuses, socketing agi, agi/haste, and agi/hit to match the socket bonuses. Crit is probably weak-ish for all specs right now, particularly for Assassination.
In terms of an incredibly crude estimate of the relative value of stats (and no, I don't have numbers for Sub, so don't ask):
| Stat | Assass. | Combat |
|---|
| Agi | 2.8 | 2.88 |
| Crit | 1.55 | 1.62 |
| Spell Hit | 3.2 | 2.38 |
| White Hit | 1.8 | 1.69 |
| Expertise | 2.6 | 2.20 |
| Haste | 2.2 | 2.25 |
| Mastery | 1.9 | 0.60 |
Lets talk Trinkets.
Incredibly crude estimate (again, no Sub estimate):
| Trinket | Assass. | Combat |
|---|
| H:STS | 810 | 830 |
| H:DV | 760 | 780 |
| H:DBW | 760 | 790 |
| STS | 720 | 740 |
| DV | 680 | 690 |
| HWT | 680 | 690 |
| H:WFS | 670 | 690 |
| DBW | 670 | 700 |
| H:Abom | 600 | |
Weapon Enchants?
Mongoose.
What are the new hit/expertise caps?
Hit caps:
| | Spell | White |
|---|
| 3/3 Precision | 289 | 646 |
| 2/3 Precision | 342 | 707 |
| 1/3 Precision | 394 | 769 |
| 0/3 Precision | 446 | 830 |
Expertise is acting strangely - the boss dodge rate seems to have been reduced to "about" 5.6% - but that value isn't exact. 172 expertise seems to be enough to cap right now, or 149 for gnomes, but those values may be off by a point or two.