Looked back a page or two and can't find a post dedicated to Demonology on the ptr like this, so here we go. I plan on doing a bunch of testing today to see whats broken and what isn't. Please post the bugs you've encountered and I'll work on keeping a list for easy readings.
Remember that damage numbers are not final, so we are looking for talents and abilities that straight up don't work instead of have wonky numbers. Currently working with this spec: http://www.wowtal.com/#k=-Aekmb8v.9zi.warlock
**Bugs**
When Demonic Pact fades and reapplies, the felguard loses almost all of its mana.
Axe Toss CANNOT be trinketed out of, possibly a bug. example : cast axe toss, enemy gets thrown down and uses trinket, still can't do anything until the effect is gone.
**Other**
Felguard has 2 abilities that are not on his action bar and can be found in his pet spellbook: Felstorm and Axe Toss
Imp has Flee and Singe Magic in his spellbook
**Rotation**
Priorities:
Bane of Doom > Hand of Gul'dan > Soul Fire(decimation) > Molten Core(Incineratex3) > Immolate* > Corruption > Shadow Bolt filler
Keep up your dots, Hand of Gul'dan on CD, shadow bolt when everything is ticking and Molten Core has not procced. Soulburn Soul Fire during Metamorphosis, Summon Infernal during the start (does more damage than Doomguard, but Doomguard if pet will die in melee / if aoe will break any CC etc.)
*Immolate will only need to be cast once when Hand of Gul'dan works properly, if I read the talent correctly.
This is a guestimate on my part, if you have tested a rotation further / done some math, please share and I will update!