IGN uploaded a video of Destiny that contains official concept art and details. Both can be found below after the page break.

Concept Art:

Destiny Details:

•  No subscrpition fee
•  First person shooter
•  "mythic science fiction universe"
•  Always connected (like an MMO)
•  Can play by solo, with your friends or others
•  Competitive/co-op play
•  Social elements
•  Will be available for the PS3, 360, and “future generation technology”
•  “Vex”, “Kabal”, “The Fallen” are different races/factions of enemies
•  At least 3 classes
•  Can wield  magic
•  Classes: Hunter (Sniper), Warlock (Magic), Titan (possible Assault class)
•  Space Zombies
•  Can travel to Mars
•  Time travelling robots (enemies)
•  Raid-type dungeons