Microsoft has nailed down a March 15 release date for the Halo: Reach Defiant Map pack, punctuating the announcement with a set of fresh screens showing off the three maps you'll be paying $10 for.

Let's take a visual tour of Condemned, Highlands and Unearthed, the three new maps that make up the Defiant Map Pack for Halo: Reach. We've posted the trailer and the official descriptions for each new location, so now all we can do is stare at screenshots and wait for the opportunity to spend 800 Microsoft points.