During today's Sony keynote at Paris Games Week, Sony made a surprise announcement at the end of their pre-show. An announcement I doubt most expected: Spelunky 2, from original developers Mossmouth, is in development.
The trailer doesn't show much at all, reflecting back on the memories players have with the original Spelunky, which released back in 2008 before getting a wider release in 2012 on Xbox first. Currently, we don't know much about Spelunky 2, other than the fact that it is coming to PS4 at some point in the future. In the meantime, in 2018 players can look forward to UFO 50, a collaboration between Derek Yu of Spelunky fame, and a few other independent developers.