Live blog starts at 10 a.m. Pacific, 1 p.m Eastern.

Apple’s Steve Jobs will take the stage Monday morning at San Francisco’s Moscone Center to unleash software upgrades for the Mac and iOS mobile platforms.

Jobs’ keynote kicks off Apple’s annual Worldwide Developers Conference, which runs until Friday. Expect to hear news on Mac OS X Lion and iOS 5, as well as the new iCloud online storage service.

Read Wired.com’s previous coverage for a rundown of what we’ll hear about at the event. Jobs’ keynote starts 10 a.m. PDT, and Wired.com will be live-blogging the event. Stay tuned on this post for the news, or follow @Wired for Twitter updates in 140 characters or less.

Photo: Moscone Center West, San Francisco (Jim Merithew/Wired.com)