In addition to Eurogamer's sources, known video game insider Marcus Sellars also tweeted about Black Ops 4. The Switch version of the game will support the game's DLC like its counterparts and will feature the system's unique HD Rumble and motion control options.
Sellars has a notable track record, having previously correctly predicted the Dark Souls Switch port and Nintendo Labo before both were announced.
Citing multiple sources, Eurogamer says that Black Ops 4 is now being developed by Treyarch, the same studio responsible for the first three Black Ops titles.
It won't be long before we hear more about the next Call of Duty game.
This all needs to be taken with a grain of salt, as we need to wait on official news from Activision regarding the future of the series.
Like clockwork, there will be a new "Call of Duty" game this holiday season. Call of Duty: Black Ops as a series within the franchise has had some of the best story telling in the single player campaigns and many look upon Black Ops fondly as this is Call of Duty at the height of its popularity. Activision is one of the biggest publishers in the business, but so far, its main contribution to the Switch is the kid-friendly, toys-to-life game "Skylanders Imaginators". But the ultra-futuristic Infinite Warfare saw relatively low sales, so Black Ops 4 may pull back from similar sci-fi trappings.
We know it can be done - Black Ops 2 had a perfectly enjoyable campaign with really interesting multiple endings. Surely this would be a more stripped-down version of the game, likely focusing on multiplayer similar to Black Ops 3 on Xbox 360/PS3.