Carey's "Memoirs," first slated for an August 25 release via Island Def Jam, will instead be available September 15, according to the Universal Music Group business-to-business website. Carey's new single, "Obsessed," is at No. 11 on the Billboard Hot 100 this week.

Combs said via a video interview with MTV News released last week that his project has been delayed partially because it's "Jay-Z time and Drake time -- enjoy those guys. But the 'Train' is coming, baby," he warned. "Get your ticket, you don't want to be left out." - more on this story

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