BOZ said:Even if he does kill the whole party, a DM might assume that he simply dies when that world ends. However, WotC does not assume this, since he is identified as alive in more than one 3E product – after all, the option is there in the module to actually have the PCs save the world (though the designers clearly have more malicious havoc in mind than that contrived ending!), so there is that. One must assume that, to place him properly in canon, he must have found a way to survive and return to Baator, where he was quickly returned to an outcast status on Avernus to plan his revenge anew.
Ripzerai said:In the timeline above, I added some stuff from the latest Dragon Magazine: demiplanes, archomentals, keepers, and Malcanthet.
Also, some draedens for Shade.
Shade said:Thanks to the greater aspects of FCII, it's highly possible that it wasn't the "full" Moloch that was slain by the PCs.
Ripzerai said:Creation of the Black Abyss
A group of unknown beings pledge themselves to the slaad lord Ygorl in an attempt to gain refuge from the tyranny of the Wind Dukes. With Ygorl's help, they create the demiplane that is later known as the Black Abyss.

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.