Yes sometimes suporting actors are changed and changes/additions to the original pilot are made.
This site has quite a few pre-air pilots listed. Does anyone know which might be different from the actual pilots. I'd rather not re-download my pre-airs I've viewed, if possible. Thanks! (Reaper, Life, Cane, Sarah Connor Chronicles, Journeyman, etc.)
I love to have both. so if you have them and not already uploaded please do so.