The month-long series of gigs will play host to 62 bands over the course of 31 days at Camden's Roundhouse in London.
Seasick Steve will headline the venue on July 2, with support expected to be announced in the coming weeks.
It will be one of the first opportunities for fans to catch the 70-year-old singer perform some of the material from his new album You Can't Teach An Old Dog New Tricks, which reached number six on the UK album chart on Sunday.
Adele, Beady Eye, The Wanted, Friendly Fires and the Foo Fighters are among previously confirmed acts for the event.
Watch the music video for Seasick Steve's track 'You Can't Teach An Old Dog New Tricks' below: