In a response to an inquiry from The Virtual Stamp Club, Canada Post hints that stamps honoring Elizabeth are likely. Here is the reply received Wednesday evening from Lisa Liu:
“Canada Post has been honoured to commemorate Her Majesty Queen Elizabeth II’s remarkable life and connection to Canada through our national stamp program.
“Since 1935, when young Princess Elizabeth was first featured on a stamp, Canada Post has featured Queen Elizabeth II on more than 70 Canadian stamps. Over the years, 
stamps have been issued to commemorate milestones, historical events, and Royal Tours to Canada.
“The first time Queen Elizabeth II appeared as Queen on a Canadian stamp was in May 1953, more than a year after She ascended the throne on February 6, 1952. Throughout her unprecedented reign, stamps were issued to celebrate her Silver, Golden and Diamond Jubilee, as well as a special stamp in 2015 when she became Canada’s longest-reigning sovereign, surpassing her great-great-grandmother, Queen Victoria.
“To celebrate Her Majesty’s 70-year reign, Canada Post issued the Platinum Jubilee stamp in February 2022. This stamp is the final one to bear an image of Queen Elizabeth II issued by Canada Post and remains available for sale at post offices and online. It features The Queen’s profile based on a sculpture created by Arnold Machin, O.B.E., R.A. While the image has been used consistently in British and other Commonwealth stamps since 1967, the Platinum Jubilee stamp marks the first time the Machin profile was used on a Canadian stamp.
“Any future stamp issues related to the change in Sovereign will be reviewed by the Canada Post Stamp Advisory Committee and production will follow our detailed process. This process will take time, but plans are already underway. We look forward to sharing details in the future.
“For more details on the Platinum Jubilee stamp and other commemorative stamps featuring Queen Elizabeth II, you can visit this site [Canada Post Magazine].”
Emphasis added.
VSC has the press release and large images of the stamp and products here.
