Spelunky 2 developer/creator Derek Yu of Mossmouth has stated he “doesn’t think we’re going to release Spelunky 2 this year,” as the “density and detail of the game is demanding more time.”
Yu further explained the decision on Twitter, saying “development is still going well and we’re not far off target,” but Spelunky 2 just needs more time to live up to the much beloved original.
Source: IGN.com Spelunky 2 Most Likely Delayed Into 2020