There's a Texas Invasion Overview on the Fallen Earth Website with an overview of a "Texas Invasion" stress test/competition scheduled for July 25 in the Fallen Earth beta. The article may be a little too steeped in the back story of the upcoming MMORPG to be clear, so there's a FAQ stating things a little more plainly. Word is:

On Saturday, July 25, the Fallen Earth team will host a unique stress testing event, the Texas Invasion: A Clan Challenge. In the Texas Invasion: A Clan Challenge, players in Fallen Earth have been asked to help fortify the Grand Canyon Province and defend against invading Texans. Seeking out encampments of the Texans, players can scavenge valuables, kill invaders or craft to gain points. The player with the most points claims the title, “Defender of the Province,” with a special prize pack.