I had two options for writing this: write lengthy paragraphs chronicaling the previously announced information about Portal 2, or squeal like a over-excited schoolgirl on a sugar high who just saw a guy who looked exactly like Justin Bieber. I chose the latter.
SQUUUEEEE! OMGOMGOMGOMG! PORTAL 2 TRAILER! OMG!
Honestly, do I need to write anything else? It's Portal mother frickin' 2! Check the external link below to see the video for yourself, and see Chell jump around the overgrown, deteriorating Aperture Science labs with the familiar, haunting voice of GLaDoS hinting at the game's plot.