Though Thursday's release of the iPhone 4 is getting the most fervent attention, Apple's iOS 4 is just as significant. CNET takes a look at the biggest offerings in this initial review.

Debuted at WWDC earlier this month, iOS 4 became available for download from Apple on Monday, bringing a host of new changes including multitasking.

A few minutes ago Apple announced the release of iOS 4.2 today. The download links aren’t live yet, and we speculate the engineers at Cupertino will flip the switch at 10AM PST. In the meantime,though ...

What Is It? iOS 4 is the newest version of Apple’s iOS mobile operating system, the platform used by all models of the iPhone, iPod Touch, and iPad. The major new features (leaving aside the ...