The purpose of the amendment is to correct a drafting error. If no amendment is made and the words “or the re-election was made under subsection 565(2)” are not added to the English version, when a preferred indictment is filed and the accused wishes to re-elect, he could force a preliminary hearing. As you know, preferred indictments are filed specifically to avoid a preliminary inquiry under very special circumstances. Therefore, the amendment is required to reflect this reality.
On May 31st, 2007. See this statement in context.