Some of the most highly anticipated albums of the summer have been delayed, including Mariah Carey's "Memoirs of an Imperfect Angel," Sean "Diddy" Combs' "Last Train to Paris" and Lil Wayne's rock and roll album "Rebirth."

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."

Lil Wayne's label publicist confirmed to Billboard.com that the album's release date has been moved. A new date has not yet been scheduled. "Rebirth" was last slated for a June 23 street date.

In addition, singer Amerie's long-awaited return, "In Love & War," which originally was scheduled for an August 11 release, will be available September 8. The set's lead single, "Why R U," reached No. 62 on the Hot R&B/Hip-Hop Songs chart for the week ended July 26.

Source: Reuters