It might be that they are moving closer to normative Christianity.
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I don’t think so. First of all there hasn’t been a official ‘revelation’ since 1978, second in order to move close to normative Christianity, they would need to renounce the entire foundation of their faith (apostasy and restoration, the Book of Mormon, and Joseph Smith) as well as all of their core theology. It would be a turnaround that would make the changes in the Worldwide Church of God (Armstrong) look like nothing.
I don’t see it happening.
So the major changes were about social policy:polygamy and racism. With the break down in traditional marriage, do you think that might edge back toward Brigham Young’s views? It is my understanding that the other Mormon body never did accept it, out of loyalty to Smith’s wife.