The following message was sent to Family Tree DNA Group Administrators by Bennett Greenspan, President and CEO of FTDNA. GAP refers to the Group Administrators Pages which is a website set up for each project's administrator(s). I suggest you visit the FQA link provided and if you want to see the new tree or compare the new tree to the old tree you'll find links to both on that page. The amount of change between the 2005 tree and the 2008 tree just enforces the idea that we are on the leading edge of genetic genealogy. "Recently, researchers led by Dr. Hammer published the newly updated Y chromosome haplogroup tree in Genome Research. On Monday, May 5th, Family Tree DNA will update its haplogroup nomenclature to match that recommended by this publication, as well as all pages that contain haplogroups. This includes your project's public website if you use Family Tree DNA's cookie cutter website tool, your GAP/Generate results pages, and each of your participants' haplogroup pages. While the name of the haplogroup a person belongs to may change, and will continue to change as more haplogroup branches are discovered and published, their actual DNA testing results and interpretation remain the same. The next issue of our newsletter, Facts and Genes, will discuss these changes in more depth and should help your participants better understand the changes to the Y-DNA haplogroup tree. The Family Tree DNA website will be temporarily offline on Monday, May 5th, at 5 am CDT to facilitate this update in nomenclature and other maintenance. Service will be restored no later than 7 am CDT that day. Ysearch.org, our free publicly accessible website, will be offline and updated simultaneously. If you would like more information about why the haplogroup nomenclature is changing and what this means to you, please visit the FAQ site below: Y-DNA Haplogroup Nomenclature FAQ Family Tree DNA" Thanks. Jim Barrett - Timpson, TX