From what I understand artists make their money from touring moreso than album sales and I would guess this will be to promote his next tour where he’ll likely be performing a lot of the material from his latest album. Em also has a dedication to his lore, so maybe even if he’s putting out a new album next year he still wants to capitalize on the narratives he was playing with in his last album. For example the promotional details of this ET mention Shady turning Hokkaido into Popsomp Hills asylum, which was a location that was used in the viral marketing for his comeback album Relapse in 2009 (there’s also Pompsop Hills Hospital in the trailer for the Death of Slim Shady album, but I think that’s a typo and it’s a hospital and not an asylum. Popsomp is just an area in his lore that has both a rehab asylum and a hospital)
I actually listened to the newest album on youtube since I havent really listened to Eminem since I was 13 and all these references were a little greek to me. Honestly I kinda enjoyed it and finally got what they were going for here with the exaggerated, almost childish vulgarity and tone to it
Basically the album is Eminem doing a satire of his old style via Slim Shady coming back to possess him, with Slim trying to make an album full of “cancellable” tracks to ruin Em’s career. However because Slim has basically been dormant since 2004 - the first time he was killed off by Marshall - all of his references and obsessions are corny and dated. In the start of the album Slim forces Marshall to go back to drinking and that segues into a song entirely about Christopher Reeve which was intended for Encore, one of his worst albums, to show that Slim is a corny, dated and embarrassing relic to him
It’s also a bait and switch of sorts, where Slim represents celebrities who intentionally try to play victim about being cancelled. Near the final third of the album Em and Slim have a rap battle where the lyrics spell this out:
(Em) You rip on paraplegics. Man seriously?
(Slim) Bitch, it’s a joke
(Em) No it’s not, it’s embarrassing
Which then leads to Em killing off the Shady persona at the end. I think this mission what with it referring to Marshall trying to kill Shady before is set before the album, because Diana says “it’s all you, you need to kill Shady yourself without our help” and I think that what is happening in this mission is in Marshall’s dream he dreams up a scenario where 47 kills Shady for him or helps, but the Shady persona survives this and then uses this false sense of security to possess Marshall leading to the Death of Slim Shady album
And I would guess if he is touring with this material maybe he’ll do like a theatrical performance of the album’s narrative, which this mission is here to promote