Using update-manager and ubuntu-release-upgrader from xenial-proposed I confirmed that the new documentation about the '-d' switch is correct and displays as expected.
I also tested upgrading using 'do-release-upgrade -d' and saw the error message regarding "the latest supported release".
Using update-manager and ubuntu- release- upgrader from xenial-proposed I confirmed that the new documentation about the '-d' switch is correct and displays as expected.
I also tested upgrading using 'do-release-upgrade -d' and saw the error message regarding "the latest supported release".