I am extremely excited by the amount of interest in publishing with Mathematica these days. Not only does Mathematica 7 give us to opportunity to create interactive notebooks for everything from lesson plans to courseware to electronic delivery of text content, it truly is an evolution of electronic publishing. But the publishing industry is just now seeing the opportunity that electronic content really has when it is dynamic, engaging, and assists in the educational process beyond what is capable without technology like Mathematica.
There are a few early examples of our technology at work in publishing electronic content. Pearson Education is releasing the very first major electronic college-level text in Mathematica. "Calculus" by Bill Briggs and Lyle Cochran will be available this Fall and was composed and delivered using Mathematica 7. To see a preview: http://www.youtube.com/watch?v=AiFigxpKaNs
And to hear how the Mathematica-based e-book really works: http://www.youtube.com/watch?v=iN2gu47o ... re=related (e-book begins at 2:30).
Also, for the best in visually stunning electronic content, check out Wolfram's own Theodore Gray and his iPad application, "The Elements: A Visual Exploration" , which utilizes several Wolfram Technologies to create a stunning tour-de-force, including Mathematica and Wolfram|Alpha:
http://www.apple.com/ipad/apps-for-ipad/#elements
I think that Mathematica's place in electronic publishing is still being determined, but I am highly encouraged by the work thus far and see nothing short of amazing possibilities given the creativity and innovative nature of the Mathematica user base. I would be interested to hear other's opinions on the current uses or proposed uses in publishing, whether it be courseware, journals, textbooks or other works.
-Scott

