It is still taught today. There is currently a compound going up near there by some wealthy LDS businessmen (and I think one of the Osmonds) in preparation for Christ’s return there.
http://lds.org/scriptures/dc-testament/dc/116.1?lang=eng#0
http://lds.org/scriptures/triple-index/adam-ondi-ahman.t1?lang=eng&letter=a
I can give you other sources for this as well, from LDS leadership.