I just spotted this on Amazon today. It's available for pre-order right now and coming out in October.
http://www.amazon.com/The-Sky-Final-Fant...y+art+book
It's called The Sky: The Art of Final Fantasy Boxed Set. It's a massive collection of Amano's art from the first ten games and includes interviews and information on Amano as well. It's about 50% off on Amazon so you may want to jump onboard if you can swing it!
I've never seen a topic like this on here before but it seems like the sort of thing fans would be tremendously interested in so I wanted to share the discovery with you all.

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Thanks for the heads up post Thundaga. It's definitely worth people's time to look into. Unfortunately it's insanely expensive even after the discount, but a fantastic discount non the less. A must buy for a artist or hardcore fan, since it's like 700ish pages of art. I don't particularly care for quite a bit of his art personally, but I respect his work.

Amazon lacks a full spread of the content, but I managed to find this:
   

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Yeah it's still pretty expensive I suppose, but I think it's a great price for what you're getting. The only thing that bothers me about it is that the book with art for VII-X is the smallest of the three. It seems counterintuitive given the scope of the last 4 golden age games.

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