iTunes 10.7 Available for Download to Prepare for iOS 6 & iPhone 5
Apple released a minor update to iTunes today for both Mac OS X and Windows. Versioned as iTunes 10.7, the update is intended as a compatibility release for the upcoming iOS 6, and devices that will run iOS 6 such as the new iPhone 5 and iPod touches.
Unchecking the boxes and clicking the giant blue Download button is sufficient to get the update, you do not need to enter an email address.
iTunes 10.7 will also appear as an update to existing iTunes users through the app itself as well as from Software Update, those should appear shortly if you do not see them yet.
A complete redesign of iTunes is expected in October as iTunes 11, note that iTunes 10.7 is not the release with a redesign and is a minor update.