Tupac To Appear On Bone Thugs Double Album

May 20 [7:55 EST] -- Bone Thugs-N-Harmony are hard at work putting the finishing touches on an ambitious double album called "The Art Of War" which will hit stores in July.

The collection of 29 tracks is divided between two discs labeled "World War One" and "World War Two."

The release will boast a number of cameo performances, including a turn by the Mo Thugs Family and a posthumous appearance by the late Tupac Shakur on the track "Thug Love."

Presumably, Tupac's appearance on the album will stir up even more buzz among "Tupac is alive" theorists.

The first single from "The Art Of War," a song called "Look Into My Eyes," is also featured on the upcoming "Batman & Robin" soundtrack, and will be released on June 3.