The next version of Apple's mobile operating system, iOS 5, will be available for download in just over one week, Apple announced today.

Apple's Senior Vice President of iOS Software told the crowd at the company's "Let's Talk iPhone" media event today that iOS 5, a significant upgrade that was first unveiled at the WWDC in June, will go live on October 12.

The new OS will feature tight integration with Twitter, wireless syncing of content across devices, an overhauled notifications and a new SMS-style messaging system for iOS users.

Perhaps its most anticipated feature will be iCloud, which will wirelessly sync music, apps, calendars, contacts and other content across iOS devices. Apple will also roll out its own "cloud locker" for music called iTunes Match, which will let users make their music library available from the cloud without having to go through a hefty download process.

Other features include a digital newsstand (aptly called "Newsstand") for newspapers and magazines, multi-tabbed browsing in Safari, a native to-do list manager called Reminders and some improvements to the way the camera works.