As I mentioned in my remarks, and as you noted, there is work ongoing. There is a lot of experience in other countries related to the proper collection of the VAT or GST from foreign vendors who don't otherwise have an operation in Canada. As Madam Laflèche explained, the way the law is written right now, there's generally a self-assessment requirement on the importation of digital services, and that generally relates to the era when the law was written.
On December 1st, 2016. See this statement in context.