Guest access is live in Planner! To learn more, visit: https://techcommunity.microsoft.com/t5/Planner-Blog/Bring-your-plans-to-life-with-guests-in-Planner/ba-p/190704
We have two more parts of this feature to deliver:
1) Comments enabled for guests to see and use
2) The ability to invite a guest from within Planner
Thank you again for your patience and feedback on this!
The Planner Team
An error occurred while saving the commentAmanda Swisher commented
Allow read only or edit access like you do for pptx and excel. Would be helpful to be able to share across org and not only a specific team.