2020

March

 * March 3: Halo: Combat Evolved Anniversary becomes available for The Master Chief Collection on PC/Steam.

May

 * May 12: Halo 2: Anniversary becomes available for The Master Chief Collection on PC/Steam.

July

 * July 14: Halo 3 becomes available for The Master Chief Collection on PC/Steam.
 * July 23: Halo Infinite ' s Campaign mode is showcased at the Xbox Games Showcase.

Summer

 * Halo 3: ODST is set to launch as part of The Master Chief Collection for PC - including the addition of Firefight to the collection.

September

 * September 22: Halo: Shadows of Reach was originally set to be released, before being delayed until October 20th.

October

 * October 20: Halo: Shadows of Reach is set to be released.

December

 * December 29: The Art of Halo Infinite is set to be released.

Unknown

 * Halo 4 is set to become available for The Master Chief Collection on PC/Steam.