If the previous preview from Chris Ryall hasn’t convinced you to purchase Transformers: The Ark II this week, maybe this new preview from IDW Editor Denton J. Tipton will.
On his blog, he has posted 5 pages from the book, including the contents page, which should give you an idea of the material that will be included in the 208 page guide. There is also a clean, high resolution version of the cover by Nick Roche.