Just to address that, there were other parties that asked for the transition period as well. The transition period is 12 months because it strikes a balance respecting the idea that some first nations are preparing to enact their matrimonial property laws and not choosing to ever have the effect of provisional federal rules. Of course, first nations can enact their own laws under the bill at any time after it comes into force, not just within the first year.
On April 25th, 2013. See this statement in context.