2019

2019 featured a few novels and a comic series, as well as an interactive experience in five U.S. cities during the summer.

January

 * January 1: Halo: Battle Born is released.
 * January 2: The first issue of Halo: Lone Wolf is released.
 * January 29: The hardcover edition of Halo: Collateral Damage is released.

February

 * February 5: Microsoft Studios is re-branded as Xbox Game Studios.
 * February 6: The second issue of Halo: Lone Wolf is released.
 * February 19: Halo: Renegades is released.

March

 * March 6: The third issue of Halo: Lone Wolf is released.
 * March 12: Halo: The Master Chief Collection is announced for PC, alongside Halo: Reach coming to the MCC.

April

 * April 3: The fourth and final issue of Halo: Lone Wolf is released.

May

 * May 14: Halo Omnibus Volume 2, a paperback version of Halo Library Edition Volume 2, is released.

June

 * June 9: Halo Infinite is featured at the E3 2019 with a new trailer.
 * June 25: The hardcover edition of Halo: Lone Wolf is released.

July

 * July 5–7: Halo: Outpost Discovery is held in Orlando, Florida.
 * July 19–21: Halo: Outpost Discovery is held in Philadelphia, Pennsylvania.

August

 * August 2–4: Halo: Outpost Discovery is held in Chicago, Illinois.
 * August 16: Halo App for Windows 10 is discontinued.
 * August 16–18: Halo: Outpost Discovery is held in Houston, Texas.
 * August 30-September 1: Halo: Outpost Discovery is held in Anaheim, California.

September

 * September 24: Halo: Oblivion is released.

October

 * October 1: Halo: Meridian Divide is released.

November

 * Principal photography for Halo: The Television Series begins.

December

 * December 3: Halo: Reach becomes available to the Master Chief Collection for both Xbox One and PC/Steam, along with the start of Season 1: Noble.
 * December 14: The Xbox Series X|S, Microsoft's ninth generation, is officially shown at the Game Awards 2019.