http://halo.xbox.com/forums/general/...290.aspx#19290

There is no new armor coming with the Defiant Map Pack. On March 15th, you can look forward to three new maps: Condemned (supports 6 - 12 players), Highlands (supports 8 - 16 players), and Unearthed (supports up to 4 players in Firefight mode).
Basically they're incompetent and/or dicks.