Halo 4 is launching in November, and Conan O'Brien's TBS show "Conan" will play a role in driving that news home.
Microsoft announced today that Halo 4 will be available worldwide on November 6. O'Brien will have a special segment on his TBS show tonight to promote the game and its launch, according to the company.
Larry Hryb, director of programming for Xbox Live and best known as "Major Nelson," tweeted yesterday that O'Brien's Team Coco will deliver Halo 4 news at some point today. The Verge followed that up with a report last night, citing sources who said Team Coco will announce that Halo 4 will launch on November 6.
Source: http://news.cnet.com/8301-10797_3-57415121-235/halo-4-launching-november-6/