Spelunky 2 was announced in 2018, which is when it is released in 2018. Alas, it does not look like it's going to happen.
Hey, Spelunky fans! Unfortunately, I do not think this is Spelunky 2 this year. Development is still going well and we are not far off target, but the density and detail of the game is demanding more time. Thank you for your patience. pic.twitter.com/BJvsHUWAY0August 14, 2019
"When things are quiet, we do not know what we are talking about 're just working away,' Yu said, "the designer of the original Spelunky, in followup tweets."
Yu hinted that the extra time required could be the result of responses to the trailer. "While I still love the overall style, we've just got more detail, as well as increasing the contrast to make existing details pop," he said.
We can not wait to show you more, but the best way is for you 🙂
So it's still technically possible that Spelunky 2 wants to be out this year, so far but it sure does not sound like it's going to happen. I think we can safely mark this one down to 2020.