 This is a comprehensive review of new developments in entropic gravity in light of the relativistic transactional interpretation, RTI. A transactional approach to spacetime events can give rise in a natural way to entropic gravity, in the way originally proposed by Eric Verlind, while also overcoming extant objections to that research programme. The theory also naturally gives rise to a cosmological constant and to modified Newtonian dynamics, Mond, and thus provides a physical explanation for the phenomena historically attributed to dark energy and dark matter. This article was authored by Schlatter and E.