Speaking at length in a statement on their website, the band said:

"dear friends we love you but it’s time to say goodbye for the never ending now to announce that spring 2015 will be our last tour for the foreseeable future and so we extend our deepest gratitude to all the beautiful people who came to see us over the last year…..

we’d also like to give thanks to ms. aurora borealis, father foam horse, and mr. valentich for there collaborative contributions to the “womb rume” message that made its way onto this ear area only a few months ago, but from now on, all ciphers shall be sealed exclusively by the meister milk. thank you."

Tickets and full dates for their final tour can be found here. Sadly they've already made their final international jaunts, and this tour is North America only.