From what I am reading from several outlets, this is 'fake news'.
The London-based Syrian Observatory for Human Rights says it has received "confirmed information" from sources within the Islamic State (IS) terrorist group that IS leader Abu Bakr al-Baghdadi is dead.
Yeah, sure! That seems like a reliable source. Until forces on the ground test and verify his body, this is simply propaganda by Baghdadi to try to take the pressure off. He is trying to misdirect allied forces away from him.