H'okay, so: on the off chance you like Firefly and/or Serenity, it's possible you've run across a certain article on EW that rings the death knell for the characters and the universe. Further research, however, indicates that the outlook is not that bleak.

Upshot: Whedon feels he achieved a sense of closure with the movie, that nothing more needs to be done. He has not abandoned the characters or the universe. If the opportunity were to present itself, he would do more with it. In other words, despite all the hubbub, there is no story here.

HOWEVER: this should provide encouragement to all of you to go buy the DVD. For everyone you know. Twice.