The article is from 2013, this is the latest: http://www.symmetrymagazine.org/article/april-2014/searching...
Holometer site: http://holometer.fnal.gov/
Holometer site: http://holometer.fnal.gov/
I've also asked Fermilab directly and they confirm the article is from today, the holometer came online very recently: https://twitter.com/FermilabToday/status/504286464637939712
The article [0] is paywalled, but the preview contains a note from a reader suggesting "the holographic principle shares the same problems of all Idealist notions: rather than relying on evidence, it puts the elegance of the model first as an argument in its favor."
I hope the Fermilab experiments provide some useful data.
[0] http://www.scientificamerican.com/article/the-black-hole-tha...