If it's been posted before feel free to lock, but I hadn't seen this, and I'm sure it's a limited time deal from EA.com
EA is celebrating the 13th year anniversary of C&C (Sure, sure... NOT the release of Red Alert 3, right?) with this nice little freebie.
http://www.ea.com/redalert/news-detail.jsp?id=62
Remember to get both discs!