They've also apparently been playing Seasons Run and Jamie's been doing Treat Each Other Right in his section, so looks like the Coachella setlist has some room to go places too.
I just listened to their new Song Exploder for "Crystalized" which I definitely recommend: The xx - Crystalised I don't recall if I have seen it actually confirmed yet, but in the episode, which they recorded about a month ago, Romy confirms they are in the middle of making a new album