Their self-titled debut album is set to arrive in September
They join previously announced artists The Doobie Brothers, Steve Winwood and Dhani Harrison
Ani DiFranco, Nick Lowe, Billie Martin, Gabrielle Aplin, Roy Harper and Dhani Harrison are among the new names
The band will bring their farewell show to the stage this July
It comes after someone suggested he form a band with Sean Lennon and Dhani Harrison
He will also play two intimate London gigs next month
DH