This is based on complete speculation, but gathering the "Who's Who of leaders in the post-production community" would be important if you were going to turn that switch that Alex Lindsay has been advocating over at MacBreak Weekly. If FCP had a "Publish for Sale on iTunes" button, you would want to get post-production gurus on board. And more than any other change in how video is edited, this would be worthy of dropping your jaw. After all, direct access to a marketplace of that size by independent content producers would put the industry on its head.... which is the best reason why it's not what is happening.
Read about it here: http://www.macrumors.com/2011/04/05/apple-to-introduce-new-final-cut-pro-on-april-12th/.