Update: Ah! Those who upgraded to iTunes 7.5 may notice their custom ringtones have vanished. I was wondering what happened to mine and never pieced it together. After doing some research it would appear iTunes 7.5 wipes away any custom ringtones, that is once you re-establish a connection with the iPhone. Otherwise, everything else remains intact — or so it seems.

iTunes 7.5 is now available for download. It features a new method for activating the iPhone wherever service is offered.

iTunes 7.5 features the ability to activate iPhone wherever service is offered and support for Phase, a new interactive music game designed exclusively for iPod nano (third generation), iPod classic, and iPod (fifth generation). This release also includes bug fixes to improve stability and performance.

It’s safe to upgrade — even if your iPhone is hacked/unlocked.

Furthermore, QuickTime 7.3 is also available. It includes some iPhone-specific updates…

• Support for iTunes 7.5
• Updated support for creating iPhone-compatible web content
• Updated JavaScript support in the QuickTime Web Plug-in
• Numerous bug fixes