Not sure it would be worth the wait. From where I sit, it appears Asana integrates as well as Planner into Teams and Flow. from what I've seen online, both Planner and Asana take some work to add contacts and don't seamlessly integrate with Outlook.
Ultimately, I am wondering if I get serious about a Project-Management-driven management approach, whether Outlook's days are numbered and I manage directly from PM communication tools, calendars and infrastructure...