Excluding the Corvette, which will be smaller, lighter and faster.
Camaro: 6th gen Alpha. Smaller, lighter, better handling. GenV smallblocks, turbo 4's, TTV6??
Malibu: No known performance variants planned. Too bad.
Cruze: Cosmetic RS version for now. Perhaps a coupe version coming. I hope someone at the Ren Cen hears about the OPC Astra.
Aveo: Ditto on the cosmetic RS. I hope someone at the Ren Cen hears about the OPC Corsa .
Impala: The next gen Epsilon one. I'm betting on an AWD TTV6 version to compete with the SHO. Better late than never.