On the album, one track called "Darkness" tells the story of a loner going on a shooting spree, while another song, "Unaccommodating," has triggered outcry and muddied the veteran singer's call for gun control.
The song references the 2017 deadly bombing at an Ariana Grande concert in Manchester, Britain, which left 22 people dead.
"But I'm contemplating yelling 'bombs away' on the game like I'm outside of an Ariana Grande concert waiting," the 47-year-old artist, born Marshall Mathers, raps on the track.
Eminem walks on stage to accept the Video of the Year Award at the MTV Video Music Awards in New York.
The lyric was met with scorn on social media, with some users dubbing it "disgusting" and "trash."
The new album, called "music to be Murdered by," features appearances from the late rapper Juice WRLD, along with Q-Tip, Ed Sheeran, Anderson .Paak and regular collaborator singer Skylar Grey.
Dr. Dre is credited throughout as a producer.
Eminem released his last album "Kamikaze" in 2018 in a similar sudden fashion. That album included several attacks on President Donald Trump.
The rapper also released Friday a video for "Darkness" that featured audio and footage from the 2017 mass shooting in Las Vegas, the deadliest US gun massacre carried about by an individual in modern history.
It ends urging viewers to register to vote: "Make your voice heard and help change gun laws in America," closing text reads.