Now that game studio Treyarch has revealed the Zombies mode in action, it's time for the multiplayer campaign of the highly-anticipated shooter to amaze. The beta for the PS4 was revealed to start on Aug. 19 and end on Aug. 23. There's no information available regarding the beta for other platforms. 

The dates were only plastered on a PlayStation Plus card that endowed attendees 30 days free access to the program, which was part of the giveaway to fans who participated in the Zombies Escape Room Challenge held at the San Diego Comic-Con. There are no other concrete details about the "Call of Duty: Black Ops 3" multiplayer beta but considering the event is a month away, Treyarch should reveal more information soon. 

Meanwhile, those who are planning to buy the Collector's Edition for the shooter are out of luck. GameStop has sold out their stock of the said bundle.

In an official statement picked up by Gamespot, the retailer explained, "Due to extremely high demand, GameStop has fulfilled its allocation and does not plan to have more in the future. Fans can still preorder the GameStop exclusive Hardened Edition." 

Amazon and Best Buy no longer have stocks to sell either. It is still unknown if Activision will fill up the retailers' shelves once more with the $200 good buy, which includes a copy of the game and a working mini-fridge. 

Just recently, Treyarch showcased the Zombie mode for "Call of Duty: Black Ops 3" in an action-packed trailer that featured the voices of a new stellar pack that includes Jeff Goldblum, Ron Perlman, Heather Graham, Robert Picardo and Neal McDonough. 

In the collector's editions, players will get to play a reimagined version of Der Riese called The Giant, which was introduced in "Call of Duty: World at War," the game that instated in the series the premise of armed hordes of the undead. 

"Call of Duty: Black Ops 3" will be released on Nov. 6.