Hi Shakkir Moulana,
Welcome to Microsoft Community and thank you for posting your query.
How are you today?
Regarding the article you shared Microsoft 365 Roadmap | Microsoft 365 we have just checked and my apologies if my response is not what you were hoping for, but at the moment, the product team has not provided any updates regarding the addition of desktop notifications for rules in the new Outlook.
The desktop notification for rule-based emails, a much-loved feature in Outlook Classic, is currently not supported in the new Outlook for Windows. This has been a common concern among users, especially those who rely on rules to organize incoming emails into folders.
Microsoft does pay close attention to user feedback, especially when it gains traction. If you haven’t already, I encourage you to upvote and comment on the feedback post below to help raise visibility: Ideas · Community
The more feedback they receive, the more likely it is that popular features will be prioritized in future updates.
Thank you for your understanding.
Best Regard,
Camila Th- MSFT | Microsoft Community Moderator