While there's no mention of the band or the album's title on the poster, fans already believe this is the long-awaited announcement. Related: Coldplay Announce New Album 'A Head Full of Dreams,' Say It's Their 'Final' One

The enigmatic poster shows a colorful 'flower of life' design with "December 4" listed below. So what makes this a Coldplay advertisement and not something else? The design mirrors one Chris Martin wore at a recent Festival appearance by the band.