In December 2010, the band sent another e-mail to fans, announcing the recording of their fifth album, to be titled "5". A selection of songs from the album were previewed at Playground Weekender music festival near Sydney on 20 February 2011. A special edition of the album, hand-numbered and limited to 2800 copies, could be pre-ordered through Lamb's website and was shipped to fans in May 2011, followed by the commercial release of the standard edition on 9 June in the UK. Other European countries saw slightly later release dates. '5' was released on label Strata Music.