U2 sure are moving in mysterious ways these days. Nobody seems to know definitively when the band's long-awaited 13th album will be released or what it'll be called, but that doesn't mean everyone isn't desperately searching for clues.

The Sun reported just a couple days ago that the album would be released in November, and now Stereogum reports that a cryptic tweet from Universal Music in Columbia seems to reveal that either a song or an album called 'Sirens' will either be released or maybe just completed in November.

The tweet, which has since been taken down, said in Spanish that 'Sirens' will be "ready" in September. But, for now, the newest material we've heard from U2 is 'Invisible,' which premiered in February.