The actual paper (ArXiv: 1703.00543) looks quite interesting.

It is a long paper (35 pages!) so I only just skimmed its contents. It purports to resolve the so-called cosmological constant problem (the many dozens of orders of magnitude discrepancy between the observed dark energy content of the universe vs. the energy density of quantum vacuum fluctuations) by arguing that we have been doing it wrong in all these years: that whereas the total energy of the vacuum is an eigenstate, the local energy density is not, and when fluctuations are properly taken into account, a very different result is obtained.

This is an intriguing idea! I like it already. However, I have not yet studied the paper well enough to judge whether its results will stand up. The fact that the editors of Phys. Rev. D made the paper an editors’ pick, or that one of the paper’s authors is Bill Unruh both suggest that the paper must be taken seriously. But that does not mean that it is correct. If it is, it will be recognized as a major step forward, towards resolving one of the longstanding problems in physical cosmology.