In an interview with Complex, longtime collaborator Sounwave, who was one of the producers on Mr. Morale, revealed that he's already working on Lamar's next record. When asked about the timeline of working on Mr. Morale, Sounwave said they always start working on the next project immediately after finishing the last, casually noting that he and Lamar are "starting on the next one now."
He added, "It's just the ideas never stopped. That's one of the main reasons I go on tour with him, is to create the next album. We can't skip a beat. We have to just keep going. There are no breaks."
Lamar hasn't confirmed this on social media, but we can at least sigh in relief knowing there's something coming.