Slipknot have teased a mystery upcoming event with a cryptic billboard message in California that reads ‘ONE NIGHT ONLY’.The apparent advert popped up on a billboard on the highway to Coachella 2024 over the last week, bearing the band’s logo alongside a second slogan of ‘LONG MAY YOU DIE’.Also included on the banner is a link to youcantkillme.com, a vintage website that is adorned with references to the band’s self-titled 1999 album (via Revolver).The site also carries the band’s upcoming live dates, and includes a note that the page was last updated on April 25 – next week. All taken together, fans have started to speculate that the band are teasing a possible 25th anniversary show for the ‘Slipknot’ album.It comes at a time when rumours of new music from the band has been percolating among their fanbase.The last album the nu-metal icons released was ‘The End, So Far’, which arrived back in August 2022.