During the Destiny 2 live stream, changes to the Crucible were announced live.
It's been confirmed that the Destiny 2 Crucible PvP mode will have more of a focus on competitive gameplay. As a result, the mode has been adapted to better fit a competitive format. Going forward, all Crucible game modes in Destiny 2 will feature a 4 versus 4 team line up. In the first Destiny, PvP modes supported up to 6 versus 6.
On top of that, all of the previous Crucible game modes from Destiny will be making their return to Destiny 2. A brand new game mode was also confirmed during the Destiny 2 live stream event.
The new Destiny 2 Crucible game mode is called Countdown - it's essentially an attack and defend mode that will give teams the objective to either defend or attack. Objectives for each team will alternate each round.
More changes are coming to the Crucible in Destiny 2 to make it more of a competitive arena. New information will be shared during the game to give each team more information. For example, players will know when an enemy is using their power or picking up important objectives on the map.
Destiny 2 is set to release on September 8, 2017 and will be coming to PlayStation 4, Xbox One and PC. It was confirmed during the live stream that the PC version would be available through Blizzard's Battle.net client, as opposed to Steam.