I've been waiting for this for almost a year now. Go get it from your favorite retailer! Also, you can read the manhwa for free on Webtoon or buy it from your favorite retailer!
Heads Up! Omniscient Reader’s Viewpoint (Novel) Volume 1 is Out Now!
Heads Up! Blue Exorcist Volume 25 is Out Now!
I already pre-ordered, so mine is on the way! Can't wait!