Last seen in Final Crisis (dying, I do believe), the villainous (that is a bit of an understatement) Darkseid will be making his return to the DC universe in the first issue of the DCnU relaunch of “Justice League” from Geoff Johns and Jim Lee.
What exactly his deal is, how much of his history will be intact and whether or not he will be living in a dumpster behind a Baby Gap is unknown, but the fact of the matter is Darkseid is back.