Going back to the budget 2010 changes, the act was changed at that time to provide the minister with more discretion in communicating his decisions under the act. The challenge of the circumstance is that the transactions are reviewed in the context of commercial confidentiality, and so he can make information public up to the point that he risks being injurious to the company, and then he's not permitted to do it.
On May 21st, 2013. See this statement in context.