Testament is preparing for a major return in 2027, with plans to enter the studio and release new material, as confirmed by frontman Chuck Billy, who mentioned nearly nine tracks in development. The band will also tour Europe and the UK with Megadeth and Black Label Society, and has launched an immersive experience with KnuckleBonz360. Meanwhile, guitarist Alex Skolnick has released a jazz-rock improvisation book, and the band's memoir features contributions from notable metal figures.