@ Mentioning in planner comments

I have not heard any news that this will be implemented. Best you can do here is to check the Microsoft 365 Roadmapd and the Microsoft Feedback Portal

Hi all, just finished off a solution so you can use @mentions in Microsoft Planner. Check it out on my blog (includes a free download of the automate with no catch!). https://www.nomorebadmondays.com/post/mentions-in-microsoft-planner