Kotaku writes: "While the rest of you are enjoying multiplayer scraps in Blizzard's StarCraft II beta, we recently had an opportunity to go hands-on (again) with the single-player side of StarCraft II: Wings of Liberty. What has changed since last year? Plenty.
This time, Blizzard showcased three new spoiler-laden missions from the game's single-player portion, set about halfway through the game, according to StarCraft II lead designer Dustin Browder. We also got a peek at the skill-building Challenge maps, which will push your micro-management and hot key skills to their limits."