Over the past couple days I've been playing with Laker, a new ebook framework. This is a collection of of bits and peices of HTML5 that gives you a number of shortcuts in designing your own ebook app.
It's based on a number of other projects, including Baker ebook Framework the Less CSS Framework, and it's coded in HTML5 (needed for the really cool effects). If you're into ebook development then you might want to look into the Less framework; this is the first I've heard of it and it's rather fascinating.
The Laker Framework is the work of Florian Franke, and it's a significant improvement on Baker. It has most of the navigation that Baker lacked built in,and it's set up to enable a fair amount of the formatting found in the Wired app I reviewed last week including sidebars, embedded audio and video, and action buttons.
You can't use it to copy the Wired app, no. But that's a good thing. There's enough here that you can use it to provide a custom look without copying any specific style.
Check it out.