Packer calls the Family Proclamation a "revelation" in the video version of the talk.
Boyd K. Packer, "Cleanse the Inner Vessel," General Conference, October 2010
Fifteen years ago, with the world in turmoil, the First Presidency and the Quorum of the Twelve Apostles issued “The Family: A Proclamation to the World,” the fifth proclamation in the history of the Church. It qualifies according to the definition as a revelation, and it would do well that the members of the church to read and follow. [transcript by Mormonr staff]