I've heard rumor that the introduction to the Book of Mormon has undergone a change recently. The recent Doubleday Edition of the Book of Mormon used to include the same text that has been used for quite some in all other Book of Mormon editions. However more recent printings have supposedly been slightly modified:
OLDER: "After thousands of years, all were destroyed except the Lamanites, and they are the principal ancestors of the American Indians."
NEWER: "After thousands of years, all were destroyed except the Lamanites, and they are among the ancestors of the American Indians."
I suspect this is due to evidence from DNA studies that the American Indians seem to be principally of Asiatic decent with no conclusive evidence of Hebrew decent ( http://mormon-chronicles.blogspot.com/2006/10/fwd-la-times-article-on-dna-and-book.html).
If anyone can confirm this, I'd appreciate hearing about it.