Speculations about the contents of an upcoming "Call of Duty: Black Ops 3" downloadable content (DLC) pack are being spread around online.

Details about the rumored DLC was spotted on Reddit, where a user reportedly decrypted and translated an upcoming "Call of Duty: Black Ops 3" Message of the Day. The message allegedly revealed that the new DLC called the Zombie Chronicles will feature eight classic remastered maps from "Call of Duty Zombies: World at War," the original "Call of Duty: Black Ops" and "Call of Duty: Black Ops 2."

The expansion pack is also rumored to come out with three maps from "Call of Duty Zombies: World at War," including the Nacht der Untoten, Verruckt, and the Shi No Numa. It will also have four maps from "Call of Duty: Black Ops" such as the Kino Der Toten, Ascension, Shangri-la and the Moon map. A map from "Call of Duty: Black Ops 2" known as Origins will be included in the pack.

The upcoming DLC will also come with several calling cards, including Takeo and Richtofen, Dempsey and Nikolai, and Zombies Heroes. All these will be featured in a special limited edition Camouflage Tin Can.

The decrypted message also mentioned that the new DLC will be released on PlayStation 4 first. This could mean that those who are playing the game on Xbox One and PC will have to wait for another 30 days before they can get their hands on the new expansion pack.

Another report from Charlie Intel claimed that "Call of Duty: Black Ops 3" Zombie Chronicles DLC will be announced on Thursday, May 4.

Both game developer Treyarch and game publisher Activision have yet to break their silence regarding the release of the rumored DLC inclusions. However, if the rumors turn out to be true, it would not take long before information about the expansion pack is unveiled to the public.