It is speculated though that the leaked document may be a fake.
Earlier last month, Ed Sheeran recalled a story about Eminem "testing" Lamar's writing skills.
Finally, the biggest hint that fans may hope on is Eminem's upcoming appearance at the Reading and Leeds Fest in the United Kingdom.
Some fans believe Eminem's more active musical schedule these days could be pointing to his preparations for the release of a 2017 album. 27 so fans are encouraged to join the festivities and watch the "Slim Shady" rapper on stage.
A cursory skim over Eminem’s sterling discography illustrates a triad of celebrated and ill-famed trends that resonate throughout his career: impeccable rhyming ability, polemic subject matter and a gaggle of feuds with a variety of luminaries from across the domain spring to mind.
Although the aforementioned can all stand on their own merits, it’s the latter that’s perhaps Eminem’s most glorious distinction.
Eminem recently offered guest verses on Big Sean's "No Favours." While the "Rap God" has done this a couple of times before, the verses he dropped on Sean's single are considered some of the most notable in his collaborative projects yet.
There will also be performances from the following artists: The Hunna, Migos, Milky Chance, Dillon Francis, Grouplove, Haim, Halsey and many more.However, he has not provided any updates on the album's development yet. Talk about him being featured in the album has been going on for a couple of months.Last year, an alleged list of songs and featured artists for the "Rap God's" highly anticipated 2017 album leaked. However, Lamar has yet to confirm if he is indeed working with Eminem on a new track.24, in celebration of the labels fifteenth anniversary. Unfortunately for those in favor of this couple, his next line is, “Pathological liar, oh, why I am such an a**hole.” Sounds like for now, these two will keep the chemistry on the tracks. Eminem’s song, “Shady XV” is the first song on the first disk — the second is dedicated to greatest hits from the labels signed artists both past and present including 50 Cent and Slaughterhouse. Eminem definitely is no stranger to pushing the boundaries, but in his song, “Vegas” the rapper talks about raping fellow artist, Iggy Azalea.
Sheeran recalled in his interview with The Fader that after Lamar created a verse that Eminem liked, the award-winning rapper called Lamar "the best." It seems that Eminem and Lamar may have a clear understanding when it comes to music.