In broader terms, the discovery got space nerds' red rockets ready for blastoff everywhere.
“We know there are terrestrial planets around many stars, and we kind of expected the nearby stars would contain terrestrial planets," astronomer Guillem Anglada-Escudé of Queen Mary University of London told the NYT. "This is not exciting because of this. The excitement is because it is the nearest one.”
In case you were thinking of ditching this cold Earth, hold on to your Hyperdrives: Proxima b is way closer to its star, Proxima Centauri, just 5 million miles away, than Earth is to its star, some 93 million miles away. Proxima Centauri is also a Red Dwarf, unlike our Yellow Dwarf, so there's all sorts of differences in mass, light, and other things a guy who writes about Pokémon sex toys can only pretend to understand.
Additionally, while Proxima b is 1.3 times the mass of Earth, its "conditions could be Earthlike, but they could also be hellish like Venus, or cold and dry like Mars." Both also good descriptors for my last relationship! There are no photos of Proxima b, either -- also like my last relationship.