I've fallen in love with the new Alcest and Woods of Desolation. I listened to these bands before, but these new releases (Shelter and As The Stars) are just some of the most beautiful albums I have heard this year. I'm still eagerly awaiting the new Trap Them and Thou albums so far, and I have hope for the new Teitanblood and Anaal Nathrakh.
Other underrated releases that I would recommend to people would be the new Dephosphorus and Yautja albums.
9/15 - Artificial Brain
9/17 - Deafheaven?
9/18 - Windhand
9/25 - Uncle Acid and The Deadbeats
9/28 - Coheed and Cambria
9/29 - Rise Against