Found this on Microcuts :)
During the TV show called "Music plus" in Montreal, Matt has revealed that 17 songs are ready for the next album (songs mainly written in the tour bus). One of them would have flamenco influences, they'll try to convince Flea (RHCP) to play the trumpet on this track.
Thanks to Romain.
And of course credit to Screenager, who knew before this news item was posted.