Major Nelson of the Red Mound, that the multiplayer demo for Lord of the Rings: Conquest is available now on Xbox Live. The 1.25GB demo is available globally and allows you to play as either the armies of "good" or "evil" -- although, what side those terms represent is surely up for philosophical debate.
Developer Pandemic has had no qualms in saying that LotR: Conquest is Star Wars: Battlefront with a Middle-Earth setting. The game should arrive on January 13 for X360, PS3 and PC. Now, go kill some filthy Hobbitses!
Update: Worth noting, the LotR: Conquest demo is also available on PSN.