Apple unveils iAd platform; iPad sales look strong

Apple CEO Steve Jobs showed off a new smartphone operating system on Thursday that features an advertising platform to compete with Google's, and revealed stronger-than-expected sales of 450,000 units for the iPad.

The iPhone 4.0 software will be available on Apple's smartphone this summer, complete with a number of upgrades, including a long-awaited multi-tasking capability that allows the use of several applications at once. A version of the iPhone's operating system is also used on the iPad, and the latest generation of software will come to Apple's new tablet computer this fall. The new advertising platform for the iPhone and iPad -- dubbed iAd -- marks Apple's first foray into a small but growing market, and is sure to please the thousands of application developers who make their living off those devices, providing them with a new revenue stream.