  The elastic nuclear recoil signal, being under intense scrutiny by multiple
underground experiments, can be interpreted either as coming from the
interaction of nuclei with WIMP dark matter or from the scattering of new
species of MeV-energy neutrinos. The most promising model for the latter case
is a neutrino $\nu_b$ that interacts with baryon number, and with a flux
sourced by the oscillations of regular solar $^8$B neutrinos. We re-analyze
this model in light of the latest experimental results. In contrast to the
light-DM interpretation of various tentative positive signals (anomalies) that
is now seriously challenged by the negative results of the LUX experiment, the
neutrino interpretation remains a viable explanation to most of the anomalies.
Considering future prospects, we show that the superCDMS experiment alone, when
equipped with Ge and Si detectors, will be able to detect $\nu_b$ and
discriminate the model from a light DM interpretation. In addition, we also
provide the forecast for the new CRESST-II run that now operates with new
detectors and diminished backgrounds.
