They found a new branch of the y chromosome that’s older than anything found so far. The human
“The new divergent lineage, which was found in an individual who submitted his DNA to Family Tree DNA, a company specializing in DNA analysis to trace family roots, branched from the Y chromosome tree before the first appearance of anatomically modern humans in the fossil record.”
There is a limit to how many times this can happen but for the present it won’t be a surprise when there are new leaps of age and diversity. The whole science is still so new, there hasn’t been time for all the data to shake out.
- “Human chromosome much older than previously thought“, Heritage Daily (Mar. 6, 2013).