rickyjames writes, The Friday the 13th USA Today has an article on revisions to network TV schedules that shows Firefly as officially canceled. This goes along with messages on fan sites quoting the cast and crew:

Site here. There were three submissions of this, but this one came in first. This won’t prevent me from reviewing every episode they air. Also, just to be clear, Fox has agreed to air every episode they’ve ordered, but they won’t be ordering any more.