Apple's media event this morning at the Guggenheim Museum in New York City was filled with announcements — and clearly indicated that Apple intends to shake up the textbook market and kick it into the future. The new iBooks 2 app offers fluid and fast navigation, a new iBookstore category features textbooks, the new iBooks Author app is free software for creating ebooks, and the new iTunes U app gives you access to complete courses from leading universities. Plus, Apple also released version 10.5.3 of iTunes, which enables textbook syncing with tne new iBooks 2 app.