From Halopedia, the Halo wiki
- February 18: The first season of Spartan Ops ends.
- February 25: The Majestic Map Pack is released.
- March 19: Halo: Silentium, the third and final novel of the Forerunner Saga, is released.
- March 29: Forge Island is released.
- April 8: The Castle Map Pack is released.
- April 9: Halo 4: Original Soundtrack Volume 2 is released.
- May 27: The Halo 4: Forward Unto Dawn Deluxe Edition Blu-ray/DVD Combo is released for Region 2.
- June: Network services for Halo 2 Vista will be terminated, ending online matchmaking.
- June 10: Halo Xbox One is announced.
- July: Halo: Spartan Assault is set to be released.
- August 14: The first issue of Halo: Initiation is set to be released.
- September 11: The second issue of Halo: Initiation is set to be released.
- September 24: Halo 4: The Essential Visual Guide is set to be released.
- ^ Tor Books reveals title, cover art, and release date of the third Halo novel by legendary science fiction author Greg Bear
- ^ Halo Waypoint, Welcome to Forge Island
- ^ CVG: Halo 4: Forward Unto Dawn gets Blu-ray/DVD release in May
- ^ Twitter: Halo 2 PC support extended through June 2013 while we investigate further support options.
- ^ Wired.com: First Look: Dark Horse Debuts New Halo Comic Series
- ^ Dark Horse - Halo: Initiation #2
- ^ Halo Waypoint: Halo 4: The Essential Visual Guide