Easterhay said:

How can people know these things, though, without them being made public knowledge? I am suitably wary and suspicious of anyone who claims "insider information".

For the record, it's public knowledge, otherwise you are right, it would be hard to put much faith in claims like that. McCallum has been asked about the OOT, and what he has said is that he would be onboard for releasing it and raised the subject in the past but Lucas has strong feelings against that and so basically Lucas is the boss, so that was that. He's not the only one who has raised the subject within Lucasfilm, but Lucas' feelings on this are already well known so when he says no you basically drop the subject. People work for Lucas and not the other way around so there is only so many times you can bring up something you already know your boss doesn't like.