This request is still on the backlog.
Planner is being worked upon, the topic is found at:
OneNote has been added and can be found in the store link within Teams.
Other items are still being added and third party bots and apps are being created as well.Marco Schonhaut commented
This would be really great! A unique access point to office 365 feature from teams is usefull and many features are needed also for personal use, it should be a default area like a mono-team by default....
You can integrate Microsoft Planner or Trello as a tab in any channel in Teams. Just click the little + sign in your channel’s tabs section, and choose Planner or Trello from the pop-up window.Marco Schonhaut commented
I agree with the comments: Please put away the WE HAVE THIS as it's not true! A personal workspace where to create planner, powerbi reports and so on inside teams app would be necessary as Teams can become the unique access point to office 365 material....