Issued with clear tray and 12-page booklet containing credits, photos and track list. Some copies with rectangular dark blue sticker on top left corner of front cover, reading: "COLDPLAY X&Y 3112802"
Some copies with circular sticker on bottom right of front cover, reading: "in concert 13.7.05 MOON AND Stars ‘05 Locarno"
Further hints> "Talk" contains elements of the composition "Computer Love" by Kraftwerk. Published by BMG Music Publishing Ltd. except X5 (Talk) published by BMG Music Publishing Ltd. / Kling Klang Musik GmbH, admin by Sony ATV Music Publishing (Germany) GmbH / Edition Positive Songs / Hanseatic Musikverlag GmbH / Warner Chappell Music.
The final track ("Til Kingdom Come") is a hidden track, not listed in the back cover tracklist, and listed just as "+" in booklet and disc label tracklists.
The image on the front cover is a colourful representation of a message encoded in the Baudot code, invented at the end of the 19th century for use in telegraphy and punched-tape teleprinters. It's supposed to read "X&Y" but due to an error it actually says "X9Y"! (The five columns can be read as binary numbers: 10111 is X, 11011 is shift, 00011 is 9 and 10101 is Y.)