The basic question is, what happens when provincial systems diverge from the standard? Let's start with this year. This year, provinces will submit a description of their existing or proposed systems by September, and then the government will determine this fall whether those systems align with the benchmark. If they do, great. If they don't, either in whole or in part, then this legislation will allow the government to impose part or all of this system in that jurisdiction.
On May 8th, 2018. See this statement in context.