Here's an artbook envisioned by Gerald Snead to be a clash of sci-fi and fantasy. Mystic Earth: The Infinite Fantasy will be an artbook with works from various artists such as Jason Felix, Depingo, Johnson Ting and more.
A reader Markus Freise just alerted me to a project his working on called ONE
ONE is basically a book of hand drawn and digitally coloured one-page comics, mostly one-panel comics which tell a whole story on a single page. The special thing is you get to submit a prompt or story idea that can be incorporated into the book.