Though Bungie is set to unveil the next Destiny expansion tomorrow, multiple leaks may already have revealed when Guardians will be able to play Rise of Iron.
A new photo courtesy of @MoreConsole on Twitter shows an image indicating Rise of Iron will be available on the PS4 and Xbox One on Sept. 20. As GameSpot indicates, the image reportedly comes from the official Destiny website, which has since been taken down. The imagery in the photo corresponds to the teaser video Bungie released yesterday ahead of the stream set to take place on June 9 at 1 pm ET/10 am PT.
Source: IGN Video Games