Massive fan of Halo series. Halo Combat Evolved=Best Game EVER! Computer programmer(C/C++, C#). Loves low-poly models. Regular pirate of software that SHOULD be free. Follower of Church of Emacs. GNU!!! User of Windows 7. Enjoys working on games(game development). More of a content developer than a engine programmer; more fun.
My guess would be that they don't update Halo 3 as much as Reach. I know it's sad to hear, considering I personally prefer Halo 3 as Reach is too complicated(levelling, credits ext.) to my liking. Also Reach does not feature Sierra 117(obviously), Hayabusa or Katana. I hope they do give them away on Halo 3. Anyway good look pursuing that hope.