The first expansion of Destiny called The Dark Below is set to arrive on Dec. 9, 2014 and will include some Playstation exclusive content.
First on the list is the exclusive ‘Strike’ that will take you to Mars called, The Undying Mind. This strike is described as:
You can step back into the coveted dangers of The Black Garden to face a timeless Vex machine-beast that has survived for ages. Prepare for firefights amidst vine-laden pillars and decaying paths in an effort to destroy the centuries-old evil.
Furthermore, PlayStation users will be getting an Exotic Weapon called The 4th Horseman, featuring Four Barrels, Five Shots, and an extremely fast fire rate.
Other content headed your way through The Dark Below DLC are new story missions that will pit you against the Hive God.
Moreover, there will be new gear including weapons and armor to dress up your characters.
You will also be getting three new competitive multiplayer maps: Pantheon, Skyshock and The Cauldron.
Apart from the above mentioned strike, you will get another strike called The Will of Crota. A new six man Raid ‘Crota’s End’ will be added to Destiny as well.
The exclusive content for PlayStation users is timed until Autumn of 2015.
Source: PlayStation Blog.