A news feature on the Lazaridis et al. preprint has just appeared at Science. The full text is behind a pay wall, but the freely available intro and graphic, of the Corded Ware horizon at its maximum extent, betray the main points of the article.
Three-part ancestry for Europeans: Eurasian “ghost lineage” contributed to most modern European genomes
Lazaridis et al. has been online for almost a year, so it's not exactly breaking news, but the Science feature is actually based on a talk by one of the paper's co-authors, Dr. Johannes Krause, at the recent SMBE 2014 conference in Basel.
The interesting thing is that in both drafts of Lazaridis et al. the authors keep well clear of attributing the post-Neolithic spread of Ancient North Eurasian (ANE) admixture (ie. the Eurasian "ghost lineage") into Western and Central Europe to any specific archeological culture or linguistic group. But according to the Science article, Krause thinks that the Corded Ware Culture (CWC) might have been responsible. Indeed, the article adds that Dr. Wolfgang Haak expressed the same opinion in another SMBE talk.
Keep in mind that Haak has already published a paper on uniparental markers from CWC remains (see here). So perhaps he wasn't just speculating that CWC people pushed ANE deep into Europe? Maybe he already knew after sequencing a CWC genome? Or not, but in any case, we're certainly due for an ancient genome from the critically important Late Neolithic/Early Bronze Age period of European prehistory.
Update 11/09/2014: It looks like my hunch was right. Haak and others have managed to sequence genome-wide data from CWC skeletons, and a paper is in the works. The authors are presenting their findings at the ASHG 2014 conference next month.
Capture of 390,000 SNPs in dozens of ancient central Europeans reveals a population turnover in Europe thousands of years after the advent of farming. I. Lazaridis, W. Haak, N. Patterson, N. Rohland, S. Mallick, B. Llamas, S. Nordenfelt, E. Harney, A. Cooper, K. W. Alt, D. Reich.
To understand the population transformations that took place in Europe since the early Neolithic, we used a DNA capture technique to obtain reads covering ~390 thousand single nucleotide polymorphisms (SNPs) from a number of different archaeological cultures of central Europe (Germany and Hungary). The samples spanned the time period from 7,500 BP to 3,500 BP (Early Neolithic to Early Bronze Age periods) and most of them were previously studied using mtDNA (Brandt, Haak et al., Science, 2013). The captured SNPs include about 360,000 SNPs from the Affymetrix Human Origins Array that were discovered in African individuals, as well as about 30,000 SNPs chosen for other reasons (that are thought to have been affected by natural selection, or to have phenotypic effects, or are useful in determining Y-chromosome haplogroups). By analyzing this data together with a dataset of 2,345 present-day humans and other published ancient genomes, we show that late Neolithic inhabitants of central Europe belonging to the Corded Ware culture were not a continuation of the earlier occupants of the region. Our results highlight the importance of migration and major population turnover in Europe long after the arrival of farming.
Update 11/02/2015: Massive migration from the steppe is a source for Indo-European languages in Europe (Haak et al. 2015 preprint) .
Corded Ware people: more versatile and healthier than Neolithic farmers