Following confirmation from the group that 2010's "The Final Frontier" would not be their last album, Bruce Dickinson revealed plans for a sixteenth studio record in July 2013, with a potential release date in 2015. In February 2015, drummer Nicko McBrain revealed that a new album had been completed, although the release was put on hold as Dickinson was recovering from treatment for a cancerous tumour found on his tongue. On 15 May, after Dickinson was cleared for activities, manager Rod Smallwood confirmed that the album would be released in 2015, although the band would not tour until 2016 to allow Dickinson to continue recuperating. On 18 June 2015, the band's website announced its title, "The Book of Souls", and confirmed a release date of 4 September 2015. It is the band's first original studio album not to be issued by EMI outside North America, following Parlophone's acquisition by Warner Music Group in 2013. It was a critical and commercial success, becoming the band's fifth UK No. 1 album.