Hear that sound? It's the sound of guns being fired, spells being launched, and hundreds of Horde and Alliance soldiers dying agonizing deaths as the battles of Warsong Gulch and Alterac Valley get underway. Today marked the launch of the long-awaited v1.5 patch for Blizzard's blockbuster MMO World of Warcraft. The patch contains a number of bug fixes, some love for two of the game's most broken classes, and a few other welcome tweaks to the game. The most eagerly anticipated addition, though, are undoubtedly the first two Battlegrounds, the PvP arenas where players from the game's two factions at last have a reason for blowing each other away.