Jobs unveiled the new iPhone 3G during the speech and said that it will be available in the U.S. and in 21 other countries on July 11.
"Just like the first iPhone, this new iPhone 3G is one of the most amazing products I've ever had the privilege to be associated with," Jobs said.
Another major development was a drop in price.
"The big news, is $399 to $199," Jobs said. "We think the iPhone 3G will be affordable to almost everyone."
"16GB model for $299," Jobs described. "iPhone started off at $599 for an 8GB device, which now sells for $399. We want to make it even more affordable. I'm happy to tell you the 8GB will sell for $199."
Jobs also touted several new bells and whistles for the new iPhone including built-in GPS that allows tracking capability. Extended battery life will allow more then five hours of high-speed browsing, seven hours of video and 24 hours of audio and 300 hours of standby time.
He said that the 3G version will approach WiFi speeds and pointed out that, in comparison, the 3G is 36 percent faster than the Nokia N95 or the Treo 750.
To go along with the latest iteration of the iPhone, Jobs also extended a wide invitation to software developers everywhere with the first look at the second generation of software for the iPhone.
Apple started testing its new development software about three months ago, and along with other key Apple personnel, Jobs showed the WWDC crowd new iPhone-native blogging apps, social-networking mini-apps, as well as demonstrations of new iPhone products from eBay and the Associated Press.
Other demo applications shown this morning include several video games and a music simulator. No adult-oriented companies produced applications shown this morning, but anyone can apply to develop new apps at Apple.com.
Developers in the Apple testing program, aka the Enterprise program, included six top airlines, eight top entertainment companies and more than one-third of the Fortune 500 top companies.
Like Apple's podcast distribution service, developers will be able to sell their applications through a soon-to-be-opened App Store on Apple.com.
To watch the full presentation, visit Apple.com.