https://www.techradar.com/news/call-of-duty-black-ops-4-drops-launch-trailer-weeks-before-actual-launch

As if fans weren't already pumped for the latest entry in the blockbuster Call of Duty series, Activision and Treyarch have dropped a Black Ops 4 launch trailer weeks ahead of the game's release on October 12. 

In case you'd forgotten, the trailer is here to remind you that Call of Duty: Black Ops 4 features updated multiplayer modes, zombies and all-new Battle Royale mode that's set to give the ever-popular Fortnite a run for its money.