The National Football Post reports that the team has cut WR Shaun McDonald, and put QB Tyler Palko on the active roster:

The Pittsburgh Steelers have officially promoted quarterback Tyler Palko from the practice squad to the active roster, his agent confirmed. Palko was signed by the Steelers on Wednesday after he cleared waivers from the CFL’s Montreal Alouettes. Palko takes over the roster spot created when veteran wide receiver Shaun McDonald was released today.