The biggest story of the release by the National Party of Budget details is not the information in it, but the fact of the release itself.
The Budget is one of the most sensitive and tightly controlled stores of information a Government has.
While successive governments have taken to releasing individual funding announcements ahead of the Budget to eke out the publicity, it always has control of what information is released and what is not.
Any loss of that control is a scandal and cannot simply be ignored.
The most controversial "leak" in recent times was the 2006 Budget leak