[UPDATED] Facebook CEO Mark Zuckerberg is on stage at the company’s f8 conference for developers in San Francisco right now, and he just unveiled a new Facebook feature called “Timeline” that’s a new take on the user profile — letting people show major moments of their life on one page.

“It’s the story of your life,” Zuckerberg said via webcast. “You have all your stories, all your apps, and a new way to express who you are.”

More details in this Facebook blog post.

zuckerbergTimeline will work with “a completely new class of apps” related to media and lifestyle activities, he said. The idea is to “rethink a lot of industries,” including the ability to discover new things through friends and track personal activities over time, such as running and eating.

Facebook calls them “open graph” apps, a reference to the way they tap into the “social graph,” each user’s network of Facebook friends.

In a demo on stage, Zuckerberg showed the ability to listen along to a song with a friend, and chat about it. It’s part of the social network’s launch of a new integrated music platform, with Spotify and other partners.

“It’s amazing how much music you can discover through your friends,” Zuckerberg said.

Spotify’s CEO Daniel Ek appeared on stage, but Zuckerberg also cited other music services involved with Facebook’s music initiative, including Seattle-based Rhapsody, which launched a series of new social features last week.

The integration of media into Facebook, and the sharing of experiences with Facebook friends, will also extend to movies and television shows. Netflix CEO Reed Hastings is now on stage talking about his company’s involvement. Zuckerberg says there will be a “social version of Netflix.”

Another feature will let Facebook users see and read collections of news stories being read by their Facebook friends.

A map view of Timeline leverages Microsoft’s Bing Maps, reflecting the partnership between the two companies.

Timeline will be rolled out gradually in the coming months, the company says.

There are some parallels between Timeline and Intersect, the Seattle social networking startup, and we’ve reached out to its founder Peter Rinearson for his reaction.

Here’s a Facebook video previewing the Timeline feature …

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