Jay-Z releasing autobiography

Jay-Z signed up Rihanna to the Def Jam label

Jay-Z is penning his memoirs.

The rapper is expected to tie the release in with the launch of his next album The Blue Print III in September.

‘It's true,’ his spokesperson tells the Daily Mirror. ‘He is writing a book.’

Jay-Z, 39, real name Shawn Carter, is married to Beyoncé Knowles, 27.