Bon Iver is set to release a new single titled 'S P E Y S I D E' on September 20, marking their first standalone release since 2020. The song features Justin Vernon on vocals and guitar, with Rob Moose providing viola, and is produced by Vernon alongside Jim-E Stack. 'S P E Y S I D E' has been performed live multiple times since 2022 and will be accompanied by a music video directed by Erinn Springer. The song's emotional themes include guilt, as expressed by Vernon in earlier performances. While there has been speculation about a potential new album following this release, no official announcement has been made yet. This new single follows the band's 2019 album 'i,i', which received critical acclaim and a Grammy nomination.