@Bradley T, I would think the video (for feature preview of Firefox 3) was made days prior to the posting on June 6.

Excerpt from http://blogs.zdnet.com/open-source/?p=2478

"During the team’s weekly conference call today, Mozilla lead developer and phenomenologist Mike Beltzner said the RC2 code will freeze on Wednesday, May 28th, be sent out to build on May 29th and likely made available during the first week of June.

Firefox 3 is currently scheduled to ship during the second week of June. Although Beltzner acknowledged that cleaning up the remaining bugs will delay the final ship date by five days, he claimed that other groups within Mozilla gave his team a ”green light” to ship the final code in the second week of June anyway so there is little material impact on the web brower’s actual ship date."