At the company's annual Worldwide Developers Conference in San Francisco today, Apple CEO Steve Jobs introduced the new iPhone 4.

Jobs said the fourth generation of iPhone has over one hundred new features including a higher resolution display, a 5 megapixel camera with LED flash, HD Video recording, Apple's A4 processor and longer battery life.

Although packed with more features such as Retina display with 960 x 640 pixel resolution and a second microphone (for noise cancellation), the redesigned iPhone is 24% thinner - 9.3 millimeters - than the iPhone 3GS leading to Apple's claim that it is the "thinnest smart phone on the planet."

Perhaps the two most notable new features of the new iPhone are more power and more talk time. The new A4 processor, the same one found in the iPad, gives the iPhone 4 more computing power and according to Apple, an improved battery delivers up to seven hours of talk time on 3G networks, up to 10 hours of web browsing on Wi-Fi and up to six hours on 3G, and up to 10 hours of video playback and up to 40 hours of audio playback.

The iPhone 4 will arrive with an new operating system, iOS 4 whose new features include Multitasking, Folders, enhanced Mail and more Enterprise support. Multitasking, allows users to switch between any of their apps, while folders will allow iPhone owner to organize their apps into collections by dragging one app on top of another. A folder is automatically created and named based on the category of apps selected. Users can change the name of any folder at any time.

The iPhone 4 will come in either black or white in 16GB and 32GB for $199 and $299 respectively. The device will be available in the US, France, Germany, Japan and the UK on June 24. Canada, along with seventeen other countries will have to wait until the end of July for their iPhone. The worldwide roll-out to 88 more countries will happen at the end of September.

Get more details and discuss in Digital Home's Wireless Phone forum .