My first thoughts were mostly of a superficial reactionary nature, similar to those in the comments to the Brett Stevens post i.e. heard it before, run of the mill, cheesy theatrical instrumentation, lacklustre production. But upon further immersion I've found this to be a truly enduring album and certainly one that grows on you with repeated hearings.
My only gripe would be the percussion which is a step back to that pitter-patter tropical sounding stuff rather than a staunch fur-clad warrior taking a run-up to smash the snare with every inch of manliness he can muster (Oathbound, Dol Guldur style). But aesthetic complaints are surely of secondary importance. After all, Summoning's strong point has always been melodic development through ambience, and this album achieves that and in fact elevates it in many ways from anything previously released.
The big success lies in a stronger melodic development and a tighter interweaving of multiple themes/motifs within each song which is an effective solution against the often formulaic tendencies of previous works. I saw hints of this on Oathbound, but they've really consolidated that approach on this one.
Will definitely be getting a copy of this and no doubt find something in it for years to come.