This is the link to the paper itself
http://www.annualreviews.org/doi/ful...-030514-124812

Dienekes' take on it-Strong (?) Linguistic and Archaeological Evidence for Steppe Indo-Europeans:
http://www.dienekes.blogspot.com/201...eological.html

On a first, cursory reading I don't see much that is new, but it's nice to have it summarized.

Dienekes is still not convinced, and holds to his Bronze Age spread of Indo-European languages from West Asia (a variant of the Grigoriev thesis).