2017

2017 included the release of a sequel to Halo Wars, Halo Wars 2, as well as many novels and comics.

January

 * January 20-30: Halo Wars 2 Blitz Beta.

February

 * February 17: The Forge Leader DLC for Halo Wars 2 was released for free, ahead of the Halo Wars 2 release.
 * February 21: Halo Wars 2 is released.
 * February 22: Halo Wars: Definitive Edition left early access.

March

 * March 1: A replica of the is released by Dark Horse Comics.
 * March 27: Morgan Kinsano is released for Halo Wars 2.

April

 * April 20: Halo Wars: Definitive Edition is released for standalone purchase on Xbox One, Windows 10, and Steam.
 * April 25: Halo: Envoy is released.
 * April 27: Colony is released for Halo Wars 2.

May

 * May 1: The Halo Legends on Netflix Trailer was released.
 * May 4: Halo: Combat Evolved is inducted in the World Video Game Hall of Fame.
 * May 22: Sergeant Johnson is released for Halo Wars 2.

June

 * June 13: The Halo Wars 2 expansion Awakening the Nightmare is officially revealed, alongside the next two Leader DLCs; Jerome-092 and Arbiter Ripa 'Moramee.
 * June 14: Halo Library Edition Volume 2 is released by Dark Horse Comics.
 * June 28: Jerome-092 and Ripa 'Moramee are released for Halo Wars 2.

July

 * July 25: Serina and the missions of Operation: SPEARBREAKER are released for Halo Wars 2.
 * July 26: A replica of the AC-220 Vulture is set to be released by Dark Horse Comics.

August

 * August 17: Yapyap the Destroyer is released for Halo Wars 2.
 * August 25: Spartan Games is closed down, ceasing all production of Halo: Fleet Battles and Halo: Ground Command.
 * August 29: Halo: Retribution is released.
 * August 30: Issue 1 of Halo: Rise of Atriox is released.

September

 * September 1: Halo model kits by Revell are released.
 * September 5: Halo: Warfleet is released in the United States.
 * September 20: Issue 2 of Halo: Rise of Atriox is released.
 * September 26: The expansion Awakening the Nightmare is released for Halo Wars 2.

October

 * October 5: Halo: Warfleet is set to be released in the United Kingdom.
 * October 11: The Halo: Adult Coloring Book is released by Dark Horse Books.
 * October 17: Halo: Recruit, the first Halo VR media, is released.
 * October 18: Issue 3 of Halo: Rise of Atriox is released.
 * October 24: Halo: Adult Coloring Book was released.

November

 * Novemebr 2: The last content update for Halo 5: Guardians, Overtime, is released.
 * November 14: Halo: Legacy of Onyx is released.

December

 * December 13: Issue 4 of Halo: Rise of Atriox is released.