Writing for the band’s follow-up to Blood In, Blood Out began as

Writing for the band’s follow-up to Blood In, Blood Out began as early as 2016, but actual recording of the album was uncertain due to Holt’s involvement with Slayer. In 2017, drummer Tom Hunting said that the band had several songs written, with the remainder still being worked on. Souza explained that the material did not sound like a continuation of Blood In, Blood Out , but rather “a lot of records put together”. Hunting said that the album could include another appearance by Kirk Hammett and a possible guest appearance by former guitarist Rick Hunolt. Progress was slow in the coming years, mostly interrupted by both Exodus’ constant touring and Holt’s commitment to Slayer’s farewell tour . Recording of the band’s eleventh studio album began in September 2020. Holt revealed on Instagram two months later that the title of album would be Persona Non Grata and it would be released in June 2021.