It does appear, though, that there is some need for a sign-off by the minister or the minister's staff before this information is released, so that there is some kind of approval process. It's not just a matter of informing the minister's office that this is about to happen; it's that the minister's office has played some direct role in the timing or whether that information is even released. That would be the implication.
On April 15th, 2010. See this statement in context.