This is actually the fourth album from WitTR.....(12 Stars, 2 Hunters, Black Cascade, Celestial Lineage)...however, I'll agree with you that it's a very impressive album to say the least. Two hunters is still sentimentally my favorite by the brothers, and Black Cascade quickly wore out its welcome and is now a snoozefest for me.
I was really hoping they'd bring back the ambient experimentation of 2 Hunters back in the future, and they certainly did, along with a few other surprises.
Record of the here so far for me, considering the new Opeth was a complete shock to the system, the new Mastodon isn't looking to top their last, and the new Leviathan isn't out until November.
Highly recommended for anyone into the USBM scene.....or fresh black metal in general.