Got a survey from Gamespot today in the mail and because of my birthday month I was chosen to answer questions about the Xbox FS. Turns out it is "one of the names being considered for the next-generation Xbox." Other potential options later mentioned are:
Xbox NE
Xbox EV
Xbox 360
Xbox 2
Xbox E
Xbox 247
Xbox HD
For choices later in the survey of which sounds most like a next-gen console, Xbox FS was the name given for the Xbox successor.
Xbox NE
Xbox EV
Xbox 360
Xbox 2
Xbox E
Xbox 247
Xbox HD
For choices later in the survey of which sounds most like a next-gen console, Xbox FS was the name given for the Xbox successor.