Gears of War 3: Horde 2.0 Briefing.

                Besides it being new, by virtue of being GoW3 the new horde has new added features. Namely, fortifications. You (and your friends) construct a Command Point/Control Tower thingy, in strategically selected (i.e. preset) locations. Now, you will be able to build Barriers, Sentries, Turrets, Dummies, and a giant mech thing called a Silverback. It's awesome. Every 10 waves, you and your team have to fight a boss wave. You earn money by killing Locust/Lambent and by completing optional objectives during the onslaught of grubs.

In a nut shell, kill grubs, make money, build shit, and kill grubs... ad infinitum.

Some people (not including myself, this looks really fun) have been biting their thumbs at the new features, claiming the old medieval methods are more superior and require more skill. Or something. To this, Epic's Cliff Blesinzinski said, "Just go ahead and hit eject on your Xbox. Put in Gears of War 2. Horde still works there." So yea.... Demo videos!