Minute-By-Minute Blog: Apple Developer's Conference

Editor's Note: While Apple didn't make any big product announcements at its World Wide Developers' Conference Monday, it did announce its iTunes Radio service and also unveiled the new iOS 7, which features the biggest redesign to the user interface since the iPhone originally launched.

(Read More: Apple to Unveil Music Service, Mobile Software)

The music streaming service is built into the music app on iPhone and iPads and is integrated into iTunes. It will also be available on Apple TV.

(Read More: Apple's Next 'Wild Card' May Not Be What You Think)

3:01 P.M.: Ad shows personal side of using Apple products. Cook sends off audience telling them to have a great conference and enjoy the rest of the week. Keynote ends.

3:00 P.M.: "Our goal at Apple is to make really great products that change peoples' lives," he says. Now he is showing a new ad.

2:59 P.M.: iTunes radio is the best way to discover new music, Cook says.

2:58 P.M.: Apple's Cook is back on stage.

2:56 P.M.: iOS 7 available to developers on iPhone today. iPad beta coming in a few weeks.

2:53 P.M.: The new iRadio is also built into Apple TV. It will be ad-free if you are an iTunes match subscriber or it's free with ads.

2:51 P.M.: Apple announces iTunes radio. It's built right into the music app.

2:45 P.M.: Siri has a new interface and voice options. Apple has also improved Siri's knowledge. The voice companion will also play a big part in automobiles, said Cue.

2:45 P.M.: New photo app also allows users to AirDrop photos with others.

2:41 P.M.: Photo-organization app, also filters for photos now available on iOS 7.

2:38 P.M.: AirDrop is easiest way to share with people around you, Federighi said. Users can share with multiple people by just tapping to add friend.

2:36 P.M.: Safari has a new organization features that allows users to swipe for history and one-tap access to favorites.

2:34 P.M.: New iOS 7 enables easy access to checking other apps while using one app.

2:32 P.M.: Federighi says all apps will have multi-tasking. This includes intelligent scheduling updates, the system notices your patterns of app usage and keeps them updating based on when you use the applications.

2:31 P.M.: Control Center is a new function that allows users to swipe up from screen and the apps you always use are there.

2:28 P.M.: Layering features for screens, new function that allows moving from screen to screen. Notification center also now available from lock screen, you no longer have to unlock to view notifications.

2:26 P.M.: New interface responds to movement and has a translucent look.

2:24 P.M. The new iOS 7 has some customization features. It is definitely a more sleek look.

2:23 P.M.: Ha! Someone in the crowd just yelled "I love you," to Cook.

2:22 P.M.: New video playing about new design of iOS, it has a different front, new palette of colors and appears to have a feature that allow to view more apps at a time.

2:18 P.M.: Cook announces iOS 7, "Biggest change to iOS since introduction of iPhone."

2:15 P.M.: Cook back on stage talking about iOS.

2:10 P.M.: Now showing all the functions of editing docs and presentations in browser. Even shows how iCloud works in Chrome browser in Windows 8.

2:09 P.M.: You can edit Word documents in Pages for iCloud.

2:06 P.M.: Apple takes a cue from Google and announces it is rolling out iWork for iCloud, which sounds a lot like Google Docs. It allows users to make docs in a browser on Mac or PC.

2:05 P.M.: Cook says 300 million iCloud accounts and has had 7.4 trillion push notifications through iCloud.

2:04 P.M.: Cook back on stage talking about iCloud.

2:03 P.M.: "Mac Pro assembled here in U.S.A.," Schiller said.

2:00 P.M.: The new Mac Pro will support up to three 4K displays, it comes with dual worstation GPUs and is 10 times faster than any hard drive in Mac before.

1:58 P.M.: Video shows new Mac Pro, after video plays he says "Can't innovate anymore, my ass."

"This is a machine unlike anything we've ever made ... designed around a unified thermal core," he says.

1:57 P.M.: Schiller giving audience a sneak preview of coming Mac Pro.

1:54 P.M.: The MacBook Airs start at $1,000 for 128GB. The 13-inch starts at $1,100 for 128GB. Begins shipping today.

1:52 P.M.: "Today, an entirely new line of MacBook Airs, all-day battery life," Schiller said. The 11-inch is going from five hour to nine hours and the 13-inch is going from seven hours to 12 hours.

1:51 P.M.: Phil Schiller now on stage talking about MacBook Air.

1:44 P.M.: Developers SDK now available to add maps to apps

1:43 P.M.: Calendar has a new design, no more leather look. Maps has also been updated.

1:42 P.M.: Push notification now coming to Mac as well.

1:39 P.M.: Federighi introduces new password feature called iCloud Keychain. Basically, this function saves all your passwords for you and makes remembering passwords to every website easier by keeping them secure. It also will keep credit card info.

1:37 P.M.: App nap is pretty cool, which is a new function that helps extend battery life. Basically, when apps are running in background they aren't killing battery.

1:35 P.M.: Safari updates include better memory and shared links, which is a function that shows links from people you follow on social networks.

1:32 P.M.: Advanced tech includes compressed memory and app nap.

1:30 P.M.: "I'd like to show advanced technologies in Mavericks," he said.

1:29 P.M.: Federighi now showing how Apple TV device can be used in multiple display feature. Multiple displays have been supported for some time, but there are now more features.

1:27 P.M.: So far, new features on OS X Mavericks are all about organization, easier search.

1:24 P.M.: More features on multiple displays. Allows for better organization. The multiple display feature supports menus, docks across multiple displays, including HDTV.

1:23 P.M.: Federighi says that now Mac users will be able to tag things wherever they are, this will make it easier to find the items.

1:21 P.M.: Craig Federighi, SVP of software engineering, introduces OS X Mavericks, the updated OS for Apple's desktop computers.

1:18 P.M.: Cook is talking about Mac computers outselling PCs. New Mac became the number one desktop in U.S. Over five years, Mac is up 100 percent, PC up 18 percent.

He said 28 million copies of Mountain Lion shipped in year, 35 percent of users are on the OS.

1:17 P.M.: "We are bringing video games to your life in the floor of your living room," Sofman said.

1:13 P.M.: Cook introduces Boris Sofman, co-founder of the start-up Anki. Anki is a start-up that brings artificial intelligence and robotics to daily life.

1:12 P.M.: One of the things we love about the app store is that it levels playing field between developers, Cook said.

1:11 P.M.: Cook says Apple has now paid developers $10 billion.

1:10 P.M.: Cook says 50 billion apps now downloaded. "Truly staggering number for less than five years," he said.

1:07 P.M.: A video showing Apple stores is playing.

1:06 P.M.: Cook talking about growth in stores. He says Apple now has 407 stores around the world and operating in 14 countries.

1:05 P.M.: "We have over 6 million registered developers," Cook says. "We sold out (WWDC) in just over a minute."

1:04 P.M.: CEO Tim Cook is on stage.

1:02 P.M.: Here we go! There is video playing to start keynote.