I knew the book was coming out but didn't know it came out last week.

Never mind that, just simply get it!
The book lets us (artists and non-artists) have a look in the sketchbooks/heads of selected artists and it'll blow you away.
I'm a firm believer that sketches are the purest form of art and the rawest, most spontaneous translation from mind to paper.
And a few of my favorite artists are in there too :)