U2 is listed as one of the contributing artists for the upcoming Record Store Day, which is happening on April 18, 2015. But there's some uncertainty over what exactly U2 is releasing that day.
The official RDS website has a page for U2's release that lists it with the title Age Of Innocence Deluxe. It's described as a numbered, double black vinyl, and the wording for the album sleeve -- "white, dye-cut gatefold center hole vinyl sleeve on front and back covers" -- sounds very similar to the limited vinyl release of Songs Of Innocence that happened last fall to make the album Grammy-eligible. It's possible that this Record Store Day release is the same item and the title has been mislabeled as Age Of Innocence; it's also possible that it's something else. (The official retail version of SOI is on white vinyl.) We have an email in to the band's PR team for clarification and will update this post when we hear more.
Whatever it is, a separate PDF list of all upcoming RSD releases indicates that 6,000 copies will be available. The Record Store Day website has a list of participating stores, but you should also call your favorite store(s) as the day approaches to see if they're participating.
(Thx to Tony L. for the tip.)
UPDATE: Erik B. points us to the Dutch Record Store Day website, which says this is a vinyl version of Songs Of Innocence, not a new release called "Age Of Innocence." It includes a track list that mirrors what was included on the Deluxe version of SOI that was released last October.
LP 1: Songs Of Innocence with 10 tracks.
LP2 SIDE C:
Lucifer's Hands
The Crystal Ballroom
The Troubles (Alternative Version)
Sleep Like A Baby Tonight (Alternative Perspective Mix by Tchad Blake)
Invisible
LP 2 SIDE D:
Acoustic Sessions
Every Breaking Wave
California (There Is No End To Love)
Raised by Wolves
Cedarwood Road
Song For Someone
The Miracle (Of Joey Ramone) Busker Version