For the record: to test this while it's in proposed, change /etc/update-manager/meta-release to point to a local copy of http://changelogs.ubuntu.com/meta-release-development with the target changed to -proposed.
For the record: to test this while it's in proposed, change /etc/update- manager/ meta-release to point to a local copy of http:// changelogs. ubuntu. com/meta- release- development with the target changed to -proposed.