The other nice thing about cash is that it will still work even during power blackouts or cyber attacks. As a consequence, bank notes will probably always be around to some degree, if only as a contingency for unusual events.
All things considered, then, it is an open question whether the Bank of Canada would ever see the need to issue a currency in digital form as a substitute for cash. Nevertheless, the world of money is evolving very rapidly, so we need to develop plans to deal with whatever contingency arises. We will have more to say about this early in 2020.