You can read John Hawks, quoted in this post's linked NYT article, with his own take on recent findings[1], echoing many of the points made by Razib Khan. Even Chris Stringer, one of most vocal & staunch advocates for a simple Out of Africa has recently walked that back [2]
If you are reading experts still standing behind a simplistic Out of Africa model after all the recent findings of archaic admixture and incredibly deep splits in human populations, I'd be very curious to see some links to papers/articles.
There is one massive clue pointing to Africa: more genetic diversity there. This doesn't rule out interesting additions from other populations that left earlier than others, went further than we thought, etc; but it is the elephant in the room.
https://www.ncbi.nlm.nih.gov/pubmed/24984772
