From the NBC press release:
NBC’s Emmy-winning comedy “The Office” (Thursdays, 8:30 – 9:00pm ET/PT) will offer fans a first-ever, web-exclusive “producer’s cut” on November 9th. The episode will include additional scenes and extra footage not shown in the broadcast version. Viewers can log onto NBC.com at 9:00pm (PT) on November 9th to see the web-exclusive event.
Update 1: The producer’s cut version will be available for a week. (Thanks, Dana!)
Update 2: Executive producer Greg Daniels will be live blogging that night, 9pm ET/6pm PT.