The Destiny Beta is your first step on the path to adventure, beginning July 17th on PlayStation and July 23rd on Xbox
Activision Publishing and Bungie have confirmed that those who pre-order Destiny at a participating retailer are guaranteed access into the Beta. Destiny Beta for PS4 and PS3 owners will commence on July 17th - PlayStation Plus required for some features. Destiny Beta for Xbox One and Xbox 360 owners will start on July 23rd - Xbox Live Gold required, subject to change
The Beta will be offline for scheduled maintenance on July 21 – July 22 and open back up to pre-order participants across all platforms until 11:59pm PDT on July 27.
Update: Activision and Bungie also unveiled the content of the three Collector's Edition versions of the game (check the press release for details).