Last year, plans to change the infrastructure at the Hill Cumorah near Palmyra, New York, were announced. By now they've done much of the restoration work at the Hill Cumorah, but there is still a lot of work to be done.Glad tidings from Cumorah!"), Joseph Smith was referring to the Hill Cumorah in New York.
While this should be obvious from the context of D&C 128, some M2C* scholars have been trying to persuade people that Joseph was referring to a hill in Mesoamerica, or that he had inexplicably adopted a false tradition about the hill in New York being the actual Hill Cumorah of Mormon 6:6.
Those familiar with Church history, however, know that Joseph learned the name of the hill Cumorah from Moroni the first time they met, as his mother Lucy Mack Smith related.
And, of course, we can all read right in Joseph's own history that it is a fact that the hill in New York is the scene of the final battles of the Jaredites and the Nephites, as Joseph's contemporaries and successors reaffirmed many times.
The changes to the site make it more natural. Most importantly, no longer will they construct a ridiculous Mayan temple in western New York! (They used to build one for the pageant.)
So far, the historical markers still omit the relevant information about Cumorah that anyone can read in the Joseph Smith Papers. We can hope that, eventually, visitors to the Hill Cumorah in New York will be fully informed about actual Church history.