iOS 7 will be released Sept. 18, Apple announced today at its launch event in Cupertino, Calif.

After months of rumors, speculation and predictions, it has been announced that iOS 7, Apple's latest software for portable gadgets, will officially be available for download on Sept. 18.

The iOS 7 will be compatible with the iPhone 4, iPhone 4S and iPhone 5, as well as the iPad 2, iPad with Retina and iPad Mini. In addition, the 5th generation iPod touch will also be iOS 7 capable. All gadgets will be able to download the updated program via iTunes.

In addition to a release date for the iOS 7, Apple also announced that iOS 7 features a radio. The live streaming music service called Apple Radio will serve as a competitor to other web-based radios such as Pandora and Spotify. Apple Radio will allow users to customize stations based on their musical preferences. Users will also have the option of buying songs through Apple Radio.

During today's event, Apple revealed that Apple iOS apps will be available for free starting today.

"Starting today, all of Apple's iOS apps-Pages, Numbers, iPhoto, iMovie, etc-will be free on a new iPhone/iPad/Touch," David Pogue, New York Times tech columnist, said via Twitter.

In addition, Apple confirmed that Siri will be re-vamped in iOS 7 to include Wikipedia and Twitter in its searches.

iOS 7 will have improved, more distinct ringtones available as well.

Apple did not live stream the event, but you can watch live coverage, including some pictures, of the event in the video below, presented by CNET.