Ihub,
It seems like that is a grey area, and in reality, almost all material events discussed in a conference call are pre-announced in a PR or an 8-K. From my (albeit limited) knowledge, it would be highly unusual to make a big contract announcement for the first time in a CC, and would push the envelope regarding the fair disclosure rule. From reading the SEC notes, it sounds like there would be a strong preference for the announcement of the material event, announcement of the conference call, and then a discussion of the event during the conference call. I don't think Dean would want to add an SEC inquiry to his list of worries right now.
GLTA