The song is a collaboration with Skrillex; they wrote the song together and it made its first appearance when Skrillex and SOFI performed live at Voyeur in San Diego. It is likely it will be released as "SOFI feat. Skrillex" or "SOFI & Skrillex". What we don't know is a release date for it, with SOFI herself saying "ask mau5trap", her record label.
Gotta keep hanging in there folks!