Penguin Classics: Threads Cover Designs by Jillian Tamaki

According to the Caustic Cover Critic, these are going to be the covers of some of the new Threads series of Penguin Classics. They were designed by Jillian Tamaki. The Secret Garden is my favourite -- love the keyhole in the lower lefthand corner. I can't seem to find more information about this series -- did Tamaki actually stitch the originals or do they just look as if they're stitched? And what other books will be in the Threads series?

Update: She did embroider them -- she's just posted more photos and they are gorgeous. She even did embroidery on the back of the jackets.