For anyone interested, their free trial for multiplayer is running this weekend. This would be a good time to give it a test drive if you were on the fence about buying it. There are two free trials running, one after the other. Details below.
According to Activision, there will be two free access stages. The first one will last until December 21st and will give you access to five modes. These modes are 2v2 Gunfight, Team Deathmatch, Featured Playlist: Nuketown Holiday 24/7, Featured Playlist: Raid the Mall and Domination.
The second stage will begin on December 21st and will last until December 24th. In this stage, you’ll get access to Prop Hunt, Combined Arms: Hardpoint and Fireteam: Dirty Bomb.
Source: https://www.dsogaming.com/news/call-of-duty-black-ops-cold-war-multiplayer-free-trial-launched/