Although Steve Jobs has yet to deliver his keynote at Apple's Worldwide Developers Conference (WWDC) in San Francisco, a two-block trail of Apple fanatics had formed by 4:15 this morning. The eager devotees were getting a head start on Jobs' keynote, in which he will reveal details on the company's new iOS 5 mobile operating system as well as the iCloud cloud storage service.

After Jobs walked out on stage to welcome the crowd, one of his devoted yelled, “I love you.” Jobs responded with, “It always helps.” He added, “We have over 5,200 attendees and sold out within two hours. We wish we could sell more tickets.”

When Jobs does eventually deliver his keynote, he is expected to discuss the company's move to cloud services, as well as the long awaited iOS, which will be introduced alongside Mac OS X 10.7 Lion, the eighth version of the Mac OS operating system. It is also widely speculated that Jobs might announce an extra piece of hardware like the Macbook Air, or the iPhone 5 or perhaps a version 4S or 4G. The iPhone 4S is expected to work with both CDMA and GSM networks.

As of now, head marketing honcho Phil Schiller is reportedly discussing 10 of the more than 250 new features in Lion. These include new fullscreen applications like iCal, Preview, Safari and iPhoto. Photo Booth and Mission Control also have new features like multiple desktop spaces, which may be populated by dragging applications into the new space.

Additional topics covered so far include multitouch gestures that enable users to scroll, tap to zoom and swipe. The Mac App Store is also apparently built in to Lion and is similar to iOS with feature like in-app purchasing and push notifications. Finally, a new version of Mail offers full height message windows, a favorites bar and “conversation view,” which shows messages exactly as they were sent.

The Apple WWDC is taking place all week at Moscone West in San Francisco.      

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