When is Outkast releasing another album?

Hands down the greatest rap duo of all time, followed closely by young gunz, but we all know its easy to make it up north, i think what contributes to the success of Outkast is being from the south, when they were on the come up, there werent any rappers coming from Atlanta or anywhere near, they opened the door for Luda TI Lil Jon Killer Mike.. enough of the history lesson, when is their next album being released