Founding memberDon Henley said during a private weekend concert that the band was nearing completion on an album of all-new material, the Las Vegas Review-Journal reported on Tuesday.
"It's coming out in 60 to 90 days, if we don't kill each other first," Henley told the crowd Saturday at the MGM Grand Garden Arena.
Eagles and Henley spokesman Larry Solters said Wednesday there was no comment.
The Long Run" in 1979 was the Eagles last album featuring all-new studio material. That album included the Grammy-winning single "Heartache Tonight."
The group officially disbanded in 1982, then they reunited in 1994 for a comeback tour featuring Henley, Glenn Frey, Joe Walsh, Timothy Schmit and Don Felder.
The band appeared together again in 1998, with past members Bernie Leadon and Randy Meisner, when they were inducted into the Rock and Roll Hall of Fame.
Henley, 59, will be honored Feb. 9 as the 2007 MusiCares Person of the Year. The annual gala put on by the Recording Academy and the MusiCares Foundation is among the festivities leading up to the 49th Annual Grammy Awards at the Staples Center on Feb. 11.
Henley, who has a home in Dallas, was selected for his achievements as a musician and for his philanthropic work benefiting environmental issues and musicians' rights and concerns.
MusiCares, established by The Recording Academy in 1989, provides assistance to individuals in the music industry during times of need.