We believe all that God has revealed, all that He does now reveal, and we believe that He will yet reveal many great and important things pertaining to the Kingdom of God.
Revelation has historically been the domain of prophets and patriarchs. In the LDS tradition however, everyone can and should seek after what God is revealing to us daily. There is certainly a greater weight to what God reveals to the church through the General Authorities, but that does not exclude the membership from developing testimony of what God has revealed, is revealing and will reveal. Everything that comes from God deserves study and prayer. We are not a church of blind obedience. As one of the leaders of the church put it and I am fond of repeating, “If we have the truth, it cannot be harmed by investigation. If we have not the truth it ought to be harmed.”
The canon of the LDS faith is currently open, and I hope it remains that way. I accept the Doctrine and Covenants and the Pearl of Great Price as scripture in the sense that it “is given by inspiration of God, and is profitable for doctrine, for reproof, for correction, for instruction in righteousness” (2Tim 3:16). I think other religious works, such as the Quran, fall into this category, and continue to hope that our open canon can be used to reconcile some of the differences especially between the Abrahamic faiths — but also between other faith foundations and ours.
This is what the Kingdom of God means to me: a community of faithful seekers. As such I believe that the kingdom is not confined to Latter Day Saints or even to Christians but is open to everyone who applies faith and develops conscience. This kingdom follows the precept of “Glory to God in the highest, and on earth peace, good will toward men” (Luke 2:14). In the modern world we can only experience this Kingdom by degrees. As long as people are proud, selfish, and ignorant (which may perhaps always be the case) the Kingdom of God will contain a shadow of our sins. If every person on earth begins working toward humility, love, and wisdom then the Kingdom could be realized fully. This would of course be a radical change from life as we know it, so while it is an admirable human goal, only the grace of God makes it possible.