It has taken them time to announce hires except the OC. Probaly has to do with some hoops they have to jump through before an announcement can be made.
I wonder if Auburn gets off the hook for his severance salary once he is officially on ISU's payroll. It might also be easier from an administration stand point for one or both parties to make it official in '09 rather than '08. Assistant coaches can't do much anyway during the dead period.