Update:
Bungie sent us some more info in a press release, which you can find below:
The Dawning will feature new Quests and Bounties to complete, a new Record Book filled with challenges to conquer, the return of Sparrow Racing League with two new tracks, one set on Earth and one set on Mercury, and a brand new game mode called Strike Scoring.Additionally, players will be able to further customize their Guardians with new gear, Sparrows, Ornaments, consumables, Shaders, Emblems, Emotes, and more.
Original story:
Confirming what we already know, you can compete in Sparrow Racing League December 13 when The Dawning comes to Destiny: Rise of Iron.
