It would be helpful if reports->timeline could display the duration of a feature or release. i.e. this release is 8 weeks. (Just the end date-start date). Helps in planning.
Thank you for the request. While we understand that it may be a manual effort, a potential workaround would be to leverage custom fields to enter this information (so that it is available as a reporting attribute).
At this time, based on current priorities and community feedback, we are unlikely to make updates in this area.