Halo 3 Heroic Map Pack to become free at 2AM Pacific last night. Those who did were greeted with sour news: the maps remained at their original price of 800 Microsoft Points. As of this post, the content still isn't free. We're not sure what the problem is, but Bungie.net members are (understandably) miffed. At any rate, the maps should be free sometime soon. Keep an eye out on this post; we'll update once the maps are available free of charge.
[Thanks to Lewis for the image]