Yeah, you basically hit the key points. Mostly normalization kills it for daggers.

Interesting news of the day: in Wrath, all ranks of Rupture gain 6% of your AP per combo point across the duration of the ability (currently 4% for 1CP, 10% for 2CP, 18% for 3CP, 21% for 4CP, 24% for 5CP). All ranks of Eviscerate gain 3% of your AP per combo point on the minimum damage, and 7% of your AP per combo point on the maximum damage, for an average of 5% of your AP per combo point (currently 3% per CP). All ranks of Envenom gain 7% of your AP per combo point (currently 3% per CP). All ranks of Garrote gain 42% of your AP across the duration (currently 18%).

Well, that and if you don't have DW Spec, that would just obliterates its damage.

As expected, they're making finishers a higher portion of our damage; what this means is that good cycle selection and management is more important - gone are the days where one can reach 93% of our damage potential with SnD alone.

So, if I'm reading this correctly, if Rupture is 6/12/18/24/30 now, that means it's 1.5/2.4/3/3.43/3.75 percent of your AP per tick, as opposed to the current 1/2/3/3/3. The immediate implications of this is that it makes using undersized ruptures somewhat less desirable than it currently is, but removes the current discontinuity where 3 point ruptures are significantly more worth using than the smaller ones.

Secondly, in a raid-buffed environment, we have Mangle boosting our rupture damage, and mitigation from armor does not apply. Hence, in practice it's 7.8% of our AP to each point, or 9.36% with Blood Spatter, or 10.14% with Serrated Blades. Meanwhile, Eviscerate gets up to +21% damage from Talents, plus 1.4x (or so) from the chance to crit, mitigated by perhaps a factor of .8 by armor. Hence, in practice, the 5% per point works out to something closer to 6.5%. And Envenom has +20% from Talents, and 1.4x from crit, and is not subject to armor, so gives us something like 11.5% in practice. So my guess would be that at low gear levels Rupture is still probably the way to go, but at higher gear levels it seems likely that Envenom will catch up. However, we'll need some better numbers on what raid-buffed crit/AP/ArPen/etc. look at level 80 before we can work out all the details.

Speaking of which: do we have numbers on the base (non-AP) damage of the finishing moves? That would be helpful for making comparisons.

So, to clarify: there are currently two new ranks of Eviscerate and Rupture, but no new rank of Envenom? That's... surprising. Hopefully they'll add in a new Envenom rank or two, or the AP changes may proved to be for naught.

Bah, too slow on spell ranks.

Don't trust poisons yet. There's no new poisons at all past 70, and that's suspicious to say the least. My hope is that they're making poisons scale, and just reworking all the base numbers and thus aren't in yet.

There are also no new ranks of any poisons, so I'm pretty confident it's an oversight, or else they just haven't gotten around to it, rather than intentional omission.

What would lead you to believe this? What possible reason would they have to remove Blessing of Salvation and Tranquil Air Totem from the game, and then not buff tank threat by 30% to accommodate that change? In what sense is a 30% tank threat compensation buff "arbitrary"?

It's not immediately clear whether or not tanks will get a full 30% increase, but I bet they get pretty close to that. It seems to me the major purpose of this change is to reduce the paladin requirement in raids by one. Currently, you really want 3-4 pallies in raids to get all the blessings; now that can be reduced by one to 2-3, which is more in line with the "2.5 members of each class" number.

They might also make threat a bit more gear-dependent, causing a more complex itemization picture for tanks with tradeoffs between aggro and survivability, which I could see being interesting/good.

However, I suspect at the high end they won't tighten the aggro situation by more than 5 or 10%, since doing more would be annoying at best and crippling at worst.

I have seen no math or indications at all to support any percentage that tank threat will be buffed at. For all we know, Blizz could plan on doubling the amount of threat that tanks can generate in the Xpac. Yes, to a point this is somewhat of speculation as opposed to hard math - but the entirety of this thread goes hand in hand with some speculation.

If Blizzard removes the threat reduction skills (Salv, Tranquil) from the game and then buffs all tanks' threat by 30%, 5 man groups would be a different game altogether. I don't think this is the way they will change the fundaments of this game. Rather, I think the new focus on raid wide buffs as opposed to party buffs will increase tank threat because they are getting more dps buffs (i.e. shaman dps totems without having to have a enhancement shammy in the tank group). This will add into proposed tank talents that provide extra threat. I still seriously doubt that Blizzard will simply increase tank threat gen by some amount (akin to a rogue's passive threat reduction).

No matter what, tanks will never generate more aggro than they have to - if they are generating on the whole 30% more than their raid ever can get, then they will adjust their spec/gear for more survivability or maybe even non-threat modified dps.

This is more the idea of what I'm referring to - say that on the whole, tanks can generate 15-20% more threat compared to TBC, but now the raid doesn't have the 30% reduction of Salvation. Instead, we get Hand of Salv - which in a rotation is useful for perhaps the 3-5 people on the top of the threat list. People who weren't close to the main tank before are now closer to him, and have to pay attention - with a in-game threat meter that Blizzard has planned, this will allow threat management to be much more exact. With everyone closer to the tank, and the top 3-5 people being watched by the pallies, people with threat dropping talents become more useful - if your top dpser is a rogue, and you don't have to waste cooldowns and mana reducing their threat for them like you might have to for a shadow priest, you can use that threat reduction on the next person on the threat list.

Aside from this, I'm still curious as to the point of 2 new ranks of Feint. No one I know uses it, as it is ineffective, wastes dps, and Vanish does it all, really. Does Blizzard actually intend us to use it? Anyone know how much it is being buffed?

Which version of the notes are you looking at? Vile Poisons currently increases Envenom damage, and Wowhead's WoLK talent calculator confirms that this hasn't changed... maybe a typo on the notes that you read?