Replying to myself with This CTV News Article from April 2023:

Once a new portrait subject has been selected, the banknote design process begins, and the banknote is ready to be issued a few years later,” Ferron-Craig told CTVNews.ca in an email on April 12.

So we can probably expect a banknote featuring king Charles in the next year or so.

He’s on a lot of coins now. It was jarring the first time I saw him, but I’ve more or less gotten used to it.

Paper money doesn’t have him, but not all bills have Queen Elizabeth either. Most of our bills feature notable Canadians and Historic Prime Ministers.

“Elbows Up” became popular after Mike Myers appeared on SNL at the beginning of March, weeks before the Canadian Election was called near the end of March.

Sources:

CBC video: #TheMoment Elbows Up became a rally cry against Trump

Buzzfeed: What Elbows Up means

Distractify: Mike Myers was Canadian and Proud during his recent appearance on SNL