2017

January

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

February

 * February 21: Halo Wars 2 is released.

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

August

 * August 2: Issue #1 of Halo: Rise of Atriox is set to be released.
 * August 29: Halo: Retribution is set to be released.
 * Yapyap is set to be released for Halo Wars 2.

September

 * September 5: Halo: Warfleet is set to be released.
 * September 6: Issue #2 of Halo: Rise of Atriox is set to be released.

October

 * October 4: Issue #3 of Halo: Rise of Atriox is set to be released.
 * October 11: The Halo Coloring Book is set to be released by Dark Horse Books.

November

 * November 1: Issue #4 of Halo: Rise of Atriox is set to be released.
 * November 14: Halo: Legacy of Onyx is set to be released.

December

 * December 6: Issue #5 and final of Halo: Rise of Atriox is set to be released.

Unknown
Fall
 * The expansion Awakening the Nightmare is set to be released for Halo Wars 2.