At Apple’s event today in New York, Apple unveiled iBooks2, a new version of its iBooks software that is tailored to interactive textbooks, and iBooks Author, an app that makes it free and simple to create interactive textbooks for the iPad.

There are already thousands of digital textbooks available on the iPad, as well as on other devices like PCs and Barnes & Noble’s Nook Tablet. But as my colleague Annie Corbett and I have written, e-textbooks are a transitional product, accounting for only 2.8% of the $8 billion US higher education textbook market in 2010, according to the National Association of College Stores. The vast majority of digital textbooks are not very innovative; they’re essentially print replicas with digital extensions like highlighting, search, and annotation. The iPad — which now outsells Macs in schools, according to Apple — is capable of much more than what has previously been produced, and Apple hasn’t been satisfied with the status quo. Today, Apple demonstrated iBooks2, a new textbook experience for the iPad; these new textbooks can be created using iBooks Author. iBooks2 will solve two product strategy problems for publishers:

• Production cost. Companies like Inkling are doing quite well helping publishers take their education apps to the next level. The problem is that publishers’ content creation and production processes are still optimized for print, not digital, so working with Inkling is expensive (in terms of publishers’ labor, not necessarily Inkling’s fees). So most publishers opt to create a small number of new apps and settle for digital replicas or “enhanced eBooks” of everything else.