Alright, some pieces of information are starting to drop as the band is doing interviews. Here's one that was done at Maryland Deathfest (talk about the new album starts at 13:25):
http://musikuniverse.mu/entrevues/item/2468-amorphis-entrevue-video-exclusive-au-maryland-deathfest
Pretty interesting guests in Chrigel Glanzmann (Eluveitie) and Martin Lopez (Soen, ex-Opeth). Being more uptempo sounds good, but the rest I'll take with a grain of salt for now
http://musikuniverse.mu/entrevues/item/2468-amorphis-entrevue-video-exclusive-au-maryland-deathfest
Pretty interesting guests in Chrigel Glanzmann (Eluveitie) and Martin Lopez (Soen, ex-Opeth). Being more uptempo sounds good, but the rest I'll take with a grain of salt for now