At last year's Game Developers Conference, Valve really got people talking when they unveiled Big Picture. A new mode for the company's online game distribution platform, Steam, Big Picture would allow users to play their downloaded games optimized for their TV screens. Today, Valve announced that the new mode will launch its beta in early September of this year. Soon, you'll be able to sit back on your La-Z-Boy with a controller in your hands and play your Steam games on the biggest screen in the house. Plenty of people are excited, but most have just one question on their minds: Does this mean that there's a Steam Box around the corner? Read on, good people! Read on.