In a recent interview with Eurogamer, Shigeru Miyamoto revealed that Nintendo is currently working on Pikman 4. Stating..
“It’s actually very close to completion. Pikmin teams are always working on the next one.”
Shortly after this announcement, Nintendo themselves released a statement on Miyamoto’s statement saying..
“We can confirm that Pikmin 4 is in development but that is all we can confirm at present.”
No additional details are known about Pikman 4, however many have speculated that it will be released on the Nintendo NX side by side with the Wii U.