iTunes Device Support Update

[kirkmc]

If you've noticed the way iTunes has worked recently, it no longer needs an update when a new device is released. The first time you connect that device, iTunes downloads what software it needs. I think (and this is just an informed guess) that this iTunes Device Support Update may simply be Apple pushing all the software for the various devices to all users. It's possible that, for some people, that software wasn't downloading correctly in iTunes, and it does make sense for it to be on all Macs. I think this is much better than pushing out a new version of iTunes for each device.

[kirkmc]

But you miss bug fixes and security updates for your apps. That's not very wise. For example, if you have WhatsApp on your phone, there's a very important security issue and they're telling everyone to update ASAP. These security issues aren't always as sensitive, but not having your apps up to date is a risk.