The annihilation of a couple and their two children in late December 1959 may sound familiar if you've read Truman Capote's In Cold Blood, in which the crime is mentioned; the eerie parallels to the Clutter case had some briefly considering whether the cases were connected. (If you have the 1993 edition, it's on p. 258.)
The DNA has now been processed, as explained in a recent article in the Sarasota Herald Tribune. The evidence was actually submitted quite some time ago, but the chronic, scandalous underfunding of DNA labs meant years and years of waiting for results. Now the lab work is done and a DNA profile is ready for comparison.
A second piece in the Herald Tribune includes headlines and images from the original news reports. A third piece takes a broad view of the tragedy, and a fourth names the critical suspects and evidence.
Here's hoping Detective Ron Albritton gets his man. Or at least an answer to the mystery, 49 years later. And I'm getting ahead of the story but here's wishing too that some true crime writer in Florida takes that solution and puts it in context in a book and explains to us not only what befell this family but why.
(Thanks to Jim McCord for the links.)