More sreenshots and a mini-interview with Gabe Newell coming from CNN Money of all places:

CNN Money talks to Gabe Newell

“You are once again Gordon Freeman,” described Gabe Newell, managing director and co-founder of Valve. “You are awakened in the future. Several of the characters from [the original game] are back, including Barney the security guard, the G-Man, about whom you learn more and in whose employ you now are, and several of the scientists. There are new characters as well, most prominently Alyx, whose mother was killed during the events of the original game. The story is once again conveyed entirely within the course of playing the game.”