Press are settling in at the Yuerba Buena Center for the Arts for Apple‘s (AAPL) special event for media — sadly, not yours truly, though my colleague Mark Veverka, Barron’s magazine’s West Coast editor, is there, and will have some thoughts for us after the event wraps up.

In the meantime, numerous talented folks are live-blogging the event, including the crew at Engadget, which you can catch here, and our very own WSJ blogs staff have a “stream” going on, over here. AllThingsD’s Ina Fried has another, separate live blog going.

A fun factoid for you: Research firm IHS iSuppli a short while ago reported that according to their estimates, Apple may spend $9 billion on displays for their devices this year, almost double the estimated $4.7 billion spent last year.

The event kicks off with CEO Tim Cook, who remarks that the company sold “172 million post-PC devices last year,” which I assume is a reference to last fiscal year ending in September. That’s 315 million post-PC devices to date, and 82 million just in fiscal Q4 of last year.

Cook ads that post-PC devices now make up 76% of Apple’s revenue.

Apple shares are currently up $3.52, or 0.7%, at $533.78.

Cook moves into the first product unveiling of the day, a new version of the company’s Apple TV set-top box. The device now supports display in full 1080p hi-def. Apple exec Eddy Cue comes on stage to give the demo. In addition to movie watching, Cue shows off the display of photos, via the “Photo Stream” service that already runs on iPhones, iPod Touches, and iPad.

The Apple TV will be available at the same $99 price, starting next week.

Cook comes back on stage and says that it’s time to talk about iPad, which he says is the “Poster child of the Post-PC world.”