Argos have released DETAILS regarding the 150th anniversary game to be played on October 6, 2023 against the Edmonton Elks. Of note:

On October 4th, the date the team was founded in 1873, the Argos, in cooperation with Football Toronto, will host the Argos Cup, a flag football tournament that will bring together teams from 20 different schools from across the Greater Toronto Area competing for the championship as well as individual skills challenges. Current Argos players, including quarterback Chad Kelly, and alumni will participate in the event throughout the day supporting the participating young athletes.
The Argos Cup is part of the team’s commitment to the continued growth of grassroots football within the community and partnerships with Football Toronto, Football Ontario and Toronto Flag Football that will see the Argos commit $200,000 over the next two years to football development.
The team hosts the Edmonton Elks on Friday, October 6th, the Argos will celebrate the history of the team that has made it the oldest professional sports team in North America still using its original name and the Canadian Football League record-holder for Grey Cup Championships with 18 titles. Fans will be invited to a special pre-game tailgate celebration at the Stanley Barracks, just steps from BMO Field, with legendary Argos alumni including Condredge Holloway, Terry Greer, Ricky Ray and Raghib ‘Rocket’ Ismail. Throughout the game, including a special anniversary halftime event, the team will pay tribute to each decade and welcome back the Argos legends who are synonymous with the Double Blue’s rich history.
Ideally, I'd love for as many alumni to be introduced as possible, though the length of halftime may impact on that, perhaps something that could be done after the game.