Producer Mark Bass has been working on the project, including tracks featuring the Slim Shady, reported Ace showbiz.
D12 put out their last album D12 World in 2004. The Detroit-based group is now consisting of Eminem, Kuniva, Swifty McVay and Fuzz Scoota.
Meanwhile, Eminem released his latest solo album MMLP2 in November last year. Powered by hits 'Berzerk', 'Rap God' and Rihanna-featured 'The Monster', the album topped Billboard 200 for two weeks.