Chris Stewart is headed back to Cleveland. Not much of a shock as Stewart has been a scratch since the October 10th game in Chicago. He needs to get some ice time to work things out. I predicted big things for Stewart this year; that prediction is certainly not looking great now, but there's still plenty of time (and talent) for him to turn things around.
No one has been called up (as of yet) to replace him. If someone does get recalled, though, it might be a defenseman as the Avs have just 6 healthy D-men on the roster.