I could be reaching here, but after seeing the artwork for the individual songs on the album, I'm starting to think the pictures in the teaser videos which, obviously, represented songs from DT's back catalogue, were supposed to be thematically similar to the songs from the new album. The Dark Eternal Night being similar to Invisible Monster. Bridges in the Sky, Peruvian Skies, and Heaven's Cove being similar AVFTTOTW. Afterlife possibly being similar to The Alien. I'm not saying musically similar, just thematically similar in the imagery of the song titles and/or lyrical content. Not sure what that spider is supposed to represent, but it can't be a coincidence that one of the teaser images was for Caught in a Web.