Use Task view to see task details. When you click a task from the List view panel, Task view opens as a panel to the right of List view.
When you open a task from any other view, Task view opens as an overlay.
Here's what you can see when you open a task in Task view:
Task title 1, status 2, assignees 3, author 4, and scheduled dates 5
Options to share 6 and follow 7 the task
Task comments and activity stream
List of subtasks
Task menu 9