According to Derren Browns Blog and twitter account, The date of Derrens caricature book has been put back due to the clash of the release date and his current tour. The blog mentions:

With the tour being so meticulously worked on it’s clashed with the release of the book. However I was lucky enough to see a first draft of it with Derren last night and it’s looking great. It’s much more text heavy that I though, quite chunky, plenty of content – I’m sure fans of Derren’s paintings are going to love it.

The caricature paintings have been a long time side line of Brown’s but have yet to have made it to the main stream viewing. Derren has featured a select few of his paintings in his previous books, and some effects, including the Orson Wells and David Blaine impressions.