One other thing I noticed with 3/13/55 on the latest sim was that UP (with 2/2 IUP) parsed very nearly at the exact same level as BP. Using 2H Ulduar set they were about 30 DPS apart. I'm guessing that has to do with the pet calculation changes.

Regarding the 3/13/55 build for 2H unholy with the Sigil of Virulence, I would just like clarification as to why you are to go this spec when you get this Sigil. I have read this thread and have read many things pertaining to this, but I still don't know why i am supposed to changed specs. If i missed it i am sorry for this post.

3/13/55 pulls even with the new sigil and has some major advantages (aggro reduce, less gcd usage, easier to get IUP)

The numbers that I am seeing while running the sim with 0/10/61 w/ IUP are coming up with a solid +55 DPS or so extra by DPS'ing in Unholy Presence instead of Blood Presence (not even counting the movement speed DPS boost for non-static fights). This build does involve dropping Epidemic for IUP. I always though that it was the generally accepted rule around here that you take IUP for the run speed but still DPS in BP, so that's why I ask.

Obviously the simulation is affected by gear levels (and I've tried 2-3 pretty different gear sets with the same results), but... in general, can anyone else substantiate what Im seeing here? Am I doing something wrong in the sim?

I am trying 1/17/53 and seem awesome, just dropped 3 points on necrosis, I prefer desolation because affect better the overall damage and GF.
It seems -8% threat is just what we need and +3% Obli. Crit. Rating works better then well with +3 Crit.Rat. from Annihilation.
Take a look I get about 33-35% crit. rat. with 25 man buffs so Obli criticals will be always around 40%.
I am not sure that – 1 x DC per 2 rotations can afford +6% obl. Crit rat.
On my last raid DC was having also a insane crit. about 60%.
We still too much good on AOE even without the old UB (aoe). WP with the plagues damage increased of 15% do at least 6% from overall dps even on single target fight.
Setting a balanced UH DK with good AOE as well on single target it is a way to go.

Thank you for all the effort that has been put into the thread so far!

So...I'm rather confident about what my single target spell rotation would be now, (replacing Obliterate for SS, check), but am still rather confused as to whether or not there are any drastic changes to the AOE spell rotation. If the front page could be updated sometime soon, that would be great. It would answer my question very nicely.

Well AOE stills the same unless for UB, goes like this: IT >PS>Pestilence>BB> RT>BB >DC>OB>BS>DC>BB>OB>DC>BB …. After these make sure your plagues are up on all mobs, keep spamming DC, OB and BB as soon you have the chance.

I respecced my DK to UH 2H today; I searched through the thread, but I couldn't find a dps value for each point in morbidity, if I missed it I'm sorry. I'm thinking to grab one point from morbidity to get IUP. I am aware they are both personal choice talents, but I would appreciate if someone can give me a dps value for morbidity.

edit: Please delete the post; found answer in the thread.

Dont do it. Morbitdity is one of the most improtant talents.
Single target it provides close to 1% dps per point and multitarget alot more (dunno maybe like 10%).
So there should never be a reason to dropt point out of morbidity.
Rather drop desolation/necrosis.

Morbidity is around ~0.7 - 1.0% dps/point. How much exactly depends on whether you are 3/13/55 or 0/17/54, whether you are still using SotVH or not, and other such factors, hence why a more precise number can't really be given. Even if it falls on the low end of the spectrum for you (you're 3/13/55, you are using SoVirulence, you aren't getting extra RP from AMS, etc), it's still better than Necrosis, point for point (although, admittedly, only slightly so in such a case).

So when you factor in the Death and Decay CD reduction, it becomes pretty clear that Necrosis is a better place to sacrifice a point from. Or Desolation, potentially.

Edit: Grrrr. Lost by mere seconds!

You trade the damage of a PS, IT, and BS for an Obliterate. You also lose 5 RP/20 seconds. It's really not that big of a damage boost, if one at all. And when you factor in the loss of Glyph of Ghoul (which is huge)?

Yeah, using Glyph of Disease is completely terrible (as Unholy, anyways). It's not rocket surgery to see how weak it is ^.-.

Outdpsing "all the dks who run Ghoul glyph" is doubtful. Parses? Simulations? Math? Anything to support your claim aside from your opinion (which runs contrary to all previous evidence)? Nope. Thus your post lacks any sort of merit.