Apple has released iTunes 10.5.3 for Mac and Windows users, that mainly released to support textbook syncing to the iPad, the new service announced at Education Event for iBookstore.
“iTunes 10.5.3 allows you to sync interactive iBooks textbooks to your iPad. These Multi-Touch textbooks are available for purchase from the iTunes Store on your Mac or from the iBookstore included with iBooks 2 on your iPad.
iBooks textbooks are created with iBooks Author — now available as a free download on the Mac App Store.”
Download iTunes 10.5.3 for Windows and Mac