Summary: DK announced that in November 2009, they will be releasing a 352, full-color book of characters, vehicles, weapons, and equipment. It will surprisingly include Halo Wars and Halo 3: ODST, which is supposed to be released September 2009. No word on book signings yet.
Hopefully it will have more photos of UNSC personell like naval officers and crew, not just the combatants. Maybe we'll see more costumes after the book comes out.