This is the full text of Activision's 5/12/2016 press release.
 

Over the weekend, Destiny revealed The Dawning, a three-week winter event beginning 13th December for all players of Destiny: Rise of Iron.

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 customise their Guardians with new gear, Sparrows, Ornaments, consumables, Shaders, Emblems, Emotes and more.