It is the band's second consecutive, and final, studio album to feature Kurt Travis on clean vocals and Zachary Garren on guitar, and is their only studio album to not feature screaming vocalist Jon Mess, who left the group in 2008 before returning in 2010.

On November 1, 2019, the band released an instrumental version of the album to streaming and digital download platforms.

On April 10, the group released the album artwork and a recording of the new song "Tree Village" onto their MySpace profile.

Nowadays, physical releases of Happiness are scarce, with recent represses selling out in minutes.

Few are available online, with a small number being found on sites such as eBay, with prices often pushing the two hundred U.S. dollar mark.