First of all, I would say that most Canadians don't receive any extension to their benefit period or their qualifying period. They have to have been working during the 52-week qualifying period to be able to qualify for EI, and they have to meet the eligibility criteria.
In terms of how we will apply it when it comes into force, it will apply to all those who are establishing a new benefit period. If they were in prison before it came into force, they would obtain an extension on their benefit period for the number of weeks they were in prison before the coming into force, but not for the weeks after the coming into force. All new potential claimants or inmates who received a sentence after it came into force would not receive extension except if they are found not guilty.