Tom Petty is almost done with his new album.  The followup to 2010's Mojo is expected later this year or early in 2014.

Petty tells Rolling Stone (quotes via Ultimate Classic Rock), "We're nearly done with it...It’s morphed into songs we would’ve written around ‘Wildflowers’ or ‘Damn the Torpedoes,’ but much more distorted.”

Wildflowers was Petty's 1994 album and Damn The Torpedoes featured the Heartbreakers and was released in 1979.  They're two of Petty's most classic albums.