Alpha-based CTS won't be a 2013 model. Probably a year or two later.
ATS, on the other hand, might be available by the end of next year...provided everything goes well...
FenwickHockey65's GM Thread!
My Cars: 2003 GMC Envoy SLE, 2000 Ford Ranger XLT (State-issued)
Extended Family: 2013 GMC Terrain SLE, 1998 GMC Sonoma SLS Extended Cab