The 'Not Afraid' rapper was apparently seen on the set of Dre's music video for his new single 'I Need A Doctor', suggesting the pair have collaborated on the track.
Ace Showbiz reports that Eminem arrived to the shoot in a black Cadillac Escalade wearing a white t-shirt and baggy jeans.
'I Need A Doctor' marks Dre's first single from his forthcoming album Detox, which has taken over 10 years to record.
The track is produced by Alex Da Kid, who helmed Eminem and Rihanna's chart-topping 'Love The Way You Lie' last year.
Dr Dre recently cited Eminem as the inspiration behind Detox, admtting: "[He] inspired me, it made me want to hurry up and get back in the studio and put more effort and more work into my own project."
'I Need A Doctor' is released in the US on February 1.