Check out our Diddy/Dirty Money section for more posts about Diddy/Dirty Money.
In an interview with Rap-Up.com, Nelly says that Diddy will be featured on his upcoming album, "Nelly 5.0."

Back in July, "1,000 Stacks" featuring The Notorious B.I.G. and Diddy appeared online. Later, in December, Nelly confirmed that Diddy would serve as a producer on his next album.

It's unclear if all of these mentions are one in the same ("1,000 Stacks") or if there are more tracks coming that feature the duo.