2006

2006 included another Eric Nylund novel, the first graphic novel, and the announcements for Halo 3 and Halo Wars.

February

 * February 23: Halo3.com, registered in 2004, transfers ownership from Microsoft's "Trout & Zimmer" holding company to Microsoft Corporation.

April

 * April 25: Volume 2 of the Halo 2: Original Soundtrack is released.

May

 * May 12: The Halo 3 Announcement Trailer is first shown at E3 2006.
 * May 17: The discovery of the extrasolar planet HD 69830, which the Kig-yar homeworld Eayn supposedly orbits, is announced.

July

 * July 19: The Halo Graphic Novel is released.

September

 * September 27: The Halo Wars Announcement Trailer is first shown at the Microsoft X06 media briefing.

October

 * October 31: The novel Halo: Ghosts of Onyx is released.

December

 * December 4: The Starry Night trailer for Halo 3 is released.