The StarCraft II Website has a new preview of the various upgrades available to players of the single-player game in StarCraft II: Wings of Liberty, Blizzard's upcoming real-time strategy sequel. They describe the various areas in the starship Hyperion where upgrades can be acquired, introducing the Armory, the Cantina (where we know who shoots first), and the laboratory, while also outlining how you can accumulate and make use of credits within the game. Thanks Big Download.