It’s official, folks. Steve Jobs will grace the stage next week at the Moscone Center in San Francisco where he will introduce OS X Lion, iOS 5, and iCloud, Apple’s new cloud service. With Jobs till out on medical leave, it was questionable whether or not he would be spearheading this year’s WWDC announcements or if those responsibilities were going to be passed off to another executive like Phil Schiller. Also of note is that Apple in its press release officially acknowledged the impending arrival of its in-house cloud service.

We point that out because Apple doesn’t typically announce or even hint at upcoming products or services ahead of time. But at this point, Apple’s upcoming cloud initiative is partially out of the bag. Last we heard, Apple was busy trying to secure up licensing rights for a digital locker streaming service that would enable iTunes users to stream purchased content from the cloud down to any iOS device.

The keynote will kick off on June 6. The full press release is below:

CUPERTINO, California-May 31, 2011-Apple® CEO Steve Jobs and a team of Apple executives will kick off the company’s annual Worldwide Developers Conference (WWDC) with a keynote address on Monday, June 6 at 10:00 a.m. At the keynote, Apple will unveil its next generation software – Lion, the eighth major release of Mac OS® X; iOS 5, the next version of Apple’s advanced mobile operating system which powers the iPad®, iPhone® and iPod touch®; and iCloud®, Apple’s upcoming cloud services offering.

WWDC will feature more than 100 technical sessions presented by Apple engineers. Mac® developers will see and learn how to develop world-class Mac OS X Lion applications using its latest technologies and capabilities. Mobile developers will be able to explore the latest innovations and capabilities of iOS and learn how to greatly enhance the functionality, performance and design of their apps. All developers can bring their code to the labs and work with Apple engineers.

For more details, visit the Apple Worldwide Developers Conference 2011 website at developer.apple.com/wwdc.

Apple designs Macs, the best personal computers in the world, along with OS X, iLife, iWork and professional software. Apple leads the digital music revolution with its iPods and iTunes online store. Apple has reinvented the mobile phone with its revolutionary iPhone and App Store, and has recently introduced iPad 2 which is defining the future of mobile media and computing devices.