It's going to be full colour with, if size constraints permit, larger, higher quality pictures than the original series. And most of the stories are new.
What I've done is take the original blog posts and bring them together under a central theme. The old posts were a random collection of fun stories illustrated with cute kitten pictures. The book is different with new interpretations of the pictures and a story running from beginning to end.
Currently the plan is to produce an epub version (primarily for the iPad) and a pdf version (for people without eReaders)
There might also be a slimmed down version, with black and white pictures, for the Kindle, Sony etc eReaders that don't display colour pictures.