I'm baffled by the claim that 5 million years is "widely accepted by scientists". Even the recent dates suggested by DNA are 5-6 million years, and it's widely accepted that they're an underestimate especially as we have fossils dated to 6-7 million years that are thought to be in the clade containing us but not the clade containing chimps.
And, well, new statistical model. Hmm... not exactly cast iron evidence is it? We'll see whether the techniques used stand the test of time.