Amazon has listed The Art of Phoenix Wright: Ace Attorney Dual Destinies, providing some details on the upcoming product. As with many other Capcom art books, Udon Entertainment will be publishing the new paperback release, which comes tagged with an ISBN-10 of 1927925444 and ISBN-13 of 978-1927925447. You can preorder the latest product from Udon with this page on Amazon if you are interested. Find the cover of the official Phoenix Wright art book below this paragraph. 
The Art of Phoenix Wright: Ace Attorney Dual Destinies features character designs, character profiles, pin-ups, storyboards and other artwork from the 3DS videogame. In total, the book has 240 pages worth of content.
The Art of Phoenix Wright: Ace Attorney Dual Destinies is coming out on the 9th of June in North America. The videogame was released on October 24, 2013, as a digital download exclusive for the eShop of the Nintendo 3DS. The sequel introduces a brand new playable character in Athena, who can use a device called the Mood Matrix that can analyze the conflicting feelings of witnesses. It also features two returning favorites in Apollo Justice and Phoenix Wright.
Fans of Phoenix Wright: Ace Attorney Dual Destinies and the series in general should check out the upcoming official art book.
