As a sequel to its Apple Store staple Convertible Book Jacket, Incase has released the newly-renamed Book Jacket for iPad 2 ($60). Maintaining the same design with significantly slenderizations, Book Jacket is a classy folio style case. Reinforced faux leather makes up the body, with a frame attached to the inner right side to hold the tablet. Three ridges along the opposite face allow the Book Jacket to stand your iPad 2 up on multiple viewing angles,…