Cardinals RB Beanie Wells isn't practicing today. Coach Ken Whisenhunt mentioned last week that Wells might be able to take part in some individual drills at the beginning of the week.
We won't know more about Wells' status until the coach addresses the media around noon, but Wells' absence today would seem to confirm that Wells won't play Thursday in Pittsburgh. The Cardinals have two full practices after this morning, then a walk-through on Wednesday before leaving to play the Steelers.
If Wells is better, I would assume the Cardinals will target the Aug. 22 game against San Diego for Wells' preseason debut.