Amazon.co.uk has posted the cover art and plot desciption for Sue Behrent's TCW Decide Your Destiny book, Dooku's Secret Army. Those who don't mind spoilers can click here for the blurb. Otherwise, the listed specs for the upcoming DYD book are as follows:

Paperback: 192 pages
Publisher: Sunbird (28 Jan 2010)
ISBN-10: 1409390063
ISBN-13: 978-1409390060
Product Dimensions: 19.8 x 12.9 x 1.4 cm

Source: SWBooks.co.uk via Starwarstimeline.com (Thanks Eddie!)