A surprising announcement at the Microsoft press conference was made by GLaDOS herself: That Portal: Still Alive is coming exclusively to the Xbox 360 this year. Here's what she said: "Hello, we hope you've enjoyed your brief detention in the press event room. The Aperture Science Test Center is pleased to announce the worldwide debut of Portal: Still Alive, a 2008 exclusive for the Xbox 360. Due to the previous tests being solvable, we are currently manufacturing new test chambers for only the most qualified test subjects. Good Luck." She specifically calls this a "2008 exclusive" for the Xbox 360, and since computers don't make mistakes, we'll take this as a sign that this will appear on other platforms after the end of the year.