In this OBJ article, Main+Main confirms the 28s tower will be the next phase, and it's planned to start this fall. I had expected the 32s tower that shares a podium with the 22s tower to be next.
https://obj.ca/toronto-firm-hopes-to-break-ground-on-kanata-north-project-in-2025/
https://obj.ca/toronto-firm-hopes-to-break-ground-on-kanata-north-project-in-2025/