Microsoft's quite proud of the fact that the first two map packs for Modern Warfare 2 will be timed exclusives for Xbox 360. Today they explained how much extra time 360 gamers will get with the new content.

"We have a 30-day timed exclusive on the Modern Warfare content packs," a Microsoft spokesperson told Eurogamer today. "So it will be available on other platforms, but you get to try and play on Xbox 360 first."

The first map pack is expected this spring. No other details have been released.