This is interesting. They are referring to the documentary hypothesis or JEDP concerning the theory of multiple writers in the OT. They didn't quite get it right, but close enough. What they have found is nothing new, so no great theological bombshells are going to be found:
Special Software Sheds Light on Who Really Wrote the Bible - FoxNews.com: "Software developed by an Israeli team is giving intriguing new hints about what researchers believe to be the multiple hands that wrote the Bible.
The new software analyzes style and word choices to distinguish parts of a single text written by different authors, and when applied to the Bible its algorithm teased out distinct writerly voices in the holy book."