Sounds like The Mars Volta, who released and toured the "Noctourniquet" album last year, have broken up. At least for the time being.
Or so it appears from a series of tweets by singer Cedric Bixler Zavala, who basically said he's quit the band. He formed TMV with fellow El Pasoan Omar Rodriguez Lopez after they dissolved At the Drive-In in 2001 (they reunited last year).
There's nothing on Rodriguez Lopez's Twitter at the moment.