Though 2 Chainz didn't share any specifics, the tip-off is getting serious traction with the 3 million followers of his Instagram account.
Both artists have kept busy of late. 2 Chainz served up a new mixtape in late October, the seven-track Hibachi For Lunch, one of four projects for the year including the joint Lil Wayne effort ColleGrove, and the mixtapes Felt Like Cappin' and Daniel Son; Necklace Don. And he guested on Cashmere Cat's "Throw Myself a Party," which dropped last Thursday (Dec. 29).
Bieber spent much of last year collecting awards and touring in support of his hit 2015 album Purpose.