TK from Ling Tosite Sigure has announced the release of a new single titled Signal! The title song has also been chosen as the opening theme for the original anime from TBS, 91 Days.
Not a lot of information has been given on this new single. Apparently, it is a previously unreleased song from TK, but that is about the only information given on the song. A release date, tracklist, and so on, are expected to be revealed at a later date. However, the anime, 91 days, begins airing in July, so we can all hear an excerpt of the song then!