Currently Being ModeratedMar 18, 2013 4:19 AM (in response to Dkjones)
If iTunes and others are separately listed as updates only those updates you select will be downloaded.
It would be different were you to blindly download a Combo update. That could well include iTunes ... but even then there are details published which tell you what the update includes. Check it out by going to Apple > Support > updates and scroll down through the updates until you reach the one you are considering.