Given the layers of sound and instrumentation that Devin has long since made into his trademark, this is actually quite a logical progression. In fact, there were hints that an album like this might be in the offing as far back at the last track on the SYL milestone 'City'. So is it really that different to his other stuff? Ghost may be the polar oppposite of Deconstruction, but if you would put them both in a blender, the result would probably come out like a normal DT album (if such a thing exists)
There is no other term for this than 'ambient', but it is not all whale noises and flutes (the latter certainly being present in fair amounts). There are some guitars on here as well as great tunes, and the joy of the record is that you don't have to listen to it 4 times to discover them. The vocals are tender, sincere and the male/female harmonies an absolute joy Melodious, harmonious, accessible and downright good. This is not going to challenge anyone's world view or frighten your parents, but so what?
To be honest, I am not sure who is supposed to buy this, as it is far too mellow for most rock-heads to jump in, and ambient fans are probably never going to stumble accross it. That said, the cover is exactly what you find in hippy shops in the racks of pan-pipe and whale noise CDs
No matter - take it for what it is - and that is quite simply extremely good