Here is the abstract of today’s Y-chromosome haplogroup tree paper in Genome Research, I’m still working to get a copy of the actual paper (unfortunately, it’s not open access at this time):
Markers on the non-recombining portion of the human Y chromosomecontinue to have applications in many fields including evolutionarybiology, forensics, medical genetics, and genealogical reconstruction.In 2002, the Y Chromosome Consortium published a single parsimonytree showing the relationships among 153 haplogroups based on243 binary markers and devised a standardized nomenclature systemto name lineages nested within this tree. Here we present anextensively revised Y chromosome tree containing 311 distincthaplogroups, including two new major haplogroups (S and T),and incorporating approximately 600 binary markers. We describemajor changes in the topology of the parsimony tree and providenames for new and rearranged lineages within the tree followingthe rules presented by the Y Chromosome Consortium in 2002.Several changes in the tree topology have important implicationsfor studies of human ancestry. We also present demography-independentage estimates for 11 of the major clades in the new Y chromosometree.