It’s been quite the busy morning for the folks out in Cupertino. During its education event, Apple released a handful of new applications including iBooks 2, iBooks Author, and iTunes U. But it didn’t stop there.

Apple has also released an update to its iTunes software today, bringing the music-syncing program to version 10.5.3…

“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.”

It doesn’t look like you need to update to 10.5.3 if you don’t plan on using iBooks — there doesn’t appear to be any new features in the software other than textbook syncing. Nevertheless, you can download the new iTunes from Apple’s website.