New Alan Rogers et al. paper out on "Ancestral Alleles and Population origins..."

Dienekes posted on this new paper a few days ago. It looks important and interesting, and I've been meaning to read it, but just haven't gotten around to it. According to Dienekes and from what I can glean from the abstract, it seems to challenge the recent common African origin of modern humans. (i.e. a LOT of introgression from archaics??)