Automatic Downloads
With the new version of iTunes, you can enable content to automatically download to your Mac when purchased on another Mac or Windows machine running iTunes, or an iOS device. And this time you won't have to sync every time you download and purchase new music.

Download Previous Purchases
Under the Purchased tab in iTunes, you'll notice a new link at the bottom of the page that says “Download Previous Purchases”. Clicking this link will allow you to download (or re-download) previously purchased music, apps and books at no additional charge.

Browse iBooks
iBooks can now be browsed directly from within the iTunes Store now, which has many bookworms brimming with excitement. Just click on the new Books tab available in the iTunes Store to instantly see a listing of both iBooks and audiobooks. Purchases will then sync between all devices (if this option is turned on).

Download iBook Samples
On any iBook page in iTunes, you now have the ability to get a sample of the book. When you click this option, the same will be synced to your iOS devices for reading. Unfortunately, iTunes doesn’t yet have the ability to let you read iBooks.

Manage iCloud Devices
From within the iTunes Store, select your username at the top, right-hand corner of the screen and sign in with your credentials. You will then notice a new section called “Manage Devices”. From this page, you will be able to delete devices from your iCloud account, but be aware you can only associate a computer with a new Apple ID once every 90 days.