I have been somewhat busy and have just read the Richmond and Jungers paper on Orrorin tugenensis, along with some of what has been written in the blogosphere about it. Unfortunately, I have to disagree with one post on the subject – that of Hawks. In his post Hawks is trying to argue that there isn’t that much difference between the results of Richmond and Jungers and the position of Senut and Pickford:
The overall morphological pattern of this femur, with its long neck and broad shaft, is much like known australopithecine femora. But to go a bit further, their metric comparisons show BAR 1002’00 to be the most Homo-like of the early hominid femora they examined, and their phenetic cluster puts it basal to the other australopithecines. That’s pretty much exactly what Senut et al. have consistently said [emphasis mine - afarensis]. So I have a hard time understanding how those observations refute the idea that Orrorin has a more Homo-like femur than later australopithecines!
The quote below is from Pickford and Senut’s 2002 paper on the Orrorin femur, like Richmond and Jungers, they focused mainly on BAR 1002’00:
In conclusion, from a systematic point of view Orrorin is a hominid sensu stricto, and in numerous features it is not chimp-like. In several features, Orrorin is closer to humans than australopithecines are which suggests that it may be more closely related to Homo than it is to Australopithecus and/or Paranthropus. If we are correct, then Australopithecus may represent a side branch in hominid evolution that became extinct without giving rise to Homo, a hypothesis that has already been suggested by Coppens  and Senut [32,37] among others.
Sounds different to me. Sounds like Pickford and Senut are claiming an Orrorin-Homo link to the exclusion of Australopithicines. Note also, that Senut, in the above quote, characterizes the paper describing the Orrorin finds as saying much the same thing.
Pickford, M.H.L., B. Senut, D. Gommery & J. Treil (2002).
Bipedalism in Orrorin tugenensis revealed by its femora.
Comptes Rendus Palevol 1:191-203.