Begins next week, 09/03: If all the objectives are completed during this event, any player that has completed at least one Nightfall during the period will be given a unique emblem. Bungie says, will mark you as a Guardian that "rose to the Mars challenge." Emperor Calus will also unlock additional rewards for successful Menagerie completions. Starting from when the goals are met, players are guaranteed to get two rewards when slotting their runes and opening a chest. Each Friday for the rest of the season, an additional reward will be added.

Challenge objectives
Defeat 175 thousand Wave 7 Escalation Protocol bosses
Defeat 300 million Hive on Mars

Mars Nightfalls:
Defeat Nokris 150 thousand times
Defeat Xol 100 thousand times
Use 300 thousand Override

Raid goes live October 5, just 4 days after the DLC goes live. Contest modifier will be activated.

infuse to reach the new Power cap of 960. Level up your Seasonal Artifact and exceed the Power limit of your weapons and armor

The move from Battle.net to Steam will include a one-time transfer of ALL Destiny 2 content that a player already owns. These will include Player Accounts, Destiny 2, Expansions, Silver, Annual Pass, etc.

https://www.bungie.net/7/en/PCMove

Cross Save will finally let us unify our adventures across many platforms. The launch of Cross Save is planned for August 21. Check out the new information about how it will work and what you'll be able to bring with you.

https://www.bungie.net/7/en/CrossSave