From Titan Books' site:
"Featuring over 300 pieces of artwork spanning decades of Ian’s work, this collection is a treat for all lovers of great fantasy art – from Lovecraft novel covers to Tolkien bestiaries to Warhammer 40,000 concept art, through a veritable trove of gothic humour, fantasy battles, dragons, beasts and a world of nightmarish visions."
The book actually came out in April, but I've only just come across it - and I'm glad I did! Miller's gothic surrealism has always captured my imagination, using intricate line-work, often using technical pens to achieve an almost impossible level of detail. His work has a certain geometry about it that makes his illustrations otherworldly - perfect for fantasy and science fiction.
You can buy The Art of Ian Miller from Titan Books.