In an interview with Little Punk People, which you can watch below (and you should because it is awesome), A Nameless Ghoul from Ghost reveals the band has been writing their new record and plans to hit up the studio this fall! Excitement abounds! This keeps in line with the band revealing they wanted to drop a new album in early 2015. In that same article they also said the band is seeking to have the new record be a little more instrumental and a little more metal, so we'll see how that plays out.
I guess we'll see the band change costume again soon at a show then? Or at least that's how they went about the promotional cycle for Infestissumam before it came out. If I remember correctly, the band did the costume change and then immediately dropped "Secular Haze" too, so keep an eye out for all that jazz! I'm sure it'll be happening at some point this year, probably during their summer tour.