Ronald Held wrote:
I do not see anyrhing quantitatively new that has not been discussed before.
What new is the experiment to actually detect the effect in a lab, which as this or another article pointed out, is like the first reactor pile in Chicago that generated a fractional Watt, establishing that a nuclear chain reaction could generate measureable energy. A couple years later we were generating megawatts.
If they can generate a field and measure the tiniest change in the speed of light, the rest is engineering.