Other music documentaries that will feature at the festival include Sinéad O'Connor film 'Nothing Compares' and an adaptation of 'Meet Me in the Bathroom'
"We can’t wait to welcome festival-goers and music lovers back after three long years," organisers said in a statement
O'Connor will now pursue a new career as a writer
The singer said her retirement announcement was a "knee jerk reaction" to some triggering media interviews
"Time to put the feet up and make other dreams come true"
It will be her first album in eight years
The singer took exception to a description of her as "the crazy lady in pop’s attic"
"You’ve got to be crazy to be a musician, but there’s a difference between being crazy and being a violent abuser of women"
The follow up 2014's 'I'm Not Bossy, I'm The Boss'
The book will hit shelves in June next year