Sony Online Entertainment announced a sequel to Planetside, a subscription-based massively-multiplayer first-person shooter launched in 2003, was in development a few years ago. The game, at that time known as Planetside Next, has been barely mentioned since. Or at least, that was the case until now. Spotted by Gamespy, the official Planetside 2 website is home to a countdown that is set to hit zero at 7:00PM PST, while a facebook page for Planetside 2 invites people to like the page...