It's been two years since Demon Hunter's Extremist, which was a great record if you haven't gotten around to it just yet, so you know what that means! Yes, it's (probably) time for a new Demon Hunter record. Without any context at all, the band posted a photo of vocalist Ryan Clark in a vocal booth with what appear to be lyrics in front of him.
So given the time frame and the picture, I think it's safe to assume that a new record is coming, and presumably soon! Vocals aren't exactly the first thing tracks for a new record, so unless this is the band demoing new stuff, I'd guess they're fairly well along in the process.