Yeah, I got the email today as well, so I finally have a bit more of an idea about what to expect! Sorry, no I have no idea about the speech for the OSB but I imagine they wouldn't tell you what its about until just before.
I imagine I received my flights earlier because we probably deal with different Defence Force Recruiting Centres, as I am coming down from Queensland.
But for now I guess we will have to wait to see what to expect next week!