The 'Reworked' tour touches down in cities including London, Oxford, Dublin, and Belfast.
The new release also includes 'Time Won't Go Slowly' and new versions of ‘Open Your Eyes’ & ‘Chocolate’.
The original recording of the track featured on Snow Patrol’s 2008 album, 'A Hundred Million Suns.'
Singer Gary Lightbody has described the track as “the purest love song” he has ever written.
The new track follows the band's most recent album 'Wildness', their first studio set in seven years, which reached No. 2 in the UK album charts.
Last year's event saw headlining sets from Queen + Adam Lambert, The Killers and Arctic Monkeys.
The headlining acts will be joined by Loyle Carner, Sigrid, Tom Grennan, Primal Scream and Cat Power.
Part One of the series' first season debuted in September, featuring TLC, Moby, Noel Gallagher and Nile Rodgers.
Double-disc editions of 'A Hundred Million Suns', 'Eyes Open' and 'Fallen Empires' are now available, as is a new single disc reissue of 'Final Straw'.
The 21-date trek takes in shows in Austin, Nashville, Boston, New York, Toronto, Los Angeles and more.
Gary Lightbody and company are also currently supporting Ed Sheeran on his stadium tour of North America.
The stunning narrative paints a personal portrait of Gary Lightbody and his father.
The band announce their US tour with Ed Sheeran on the same day their new album 'Wildness' - their first in seven years - is released.
Snow Patrol premiere the video for 'What If This Is All The Love You Ever Get?', directed by Brett Simon, taken from their new album 'Wildness'.
Snow Patrol premiere the video for new song 'Life On Earth', from their forthcoming album 'Wildness', set for release through Polydor on 25 May.