Hardly the first study to show this.
Al, I know this isn't the first survey to suggest that Jews came out of the Middle East in the time period in question, or that they diverged from Babylonian Jewry in roughly 500 BCE. However, this is the first study I remember seeing describing an incredibly close blood relationship between modern-day Ashkenazim and Sephardim. Has that been generally accepted for a while? There are huge cultural and linguistic differences between the groups, and while it might not be the most surprising thing in the world that they're still closely related, it's certainly interesting.