Well, this was the XTS AWD model which still uses the 6AT. I assume the CTS will get the 8AT, at least in RWD form.

On CA 91 octane it seems all GM cars are on the verge of knock. The turbo Cruzes are just scary. My 2010 CTS-V, even stock, would regularly pull 3-4 degrees at various rpms on a warm day. Actually made more power, more consistently with less base advance. Our gas quality is just abysmal, which is why I run E85 almost exclusively now. Thank you EFILive for dual map functionality!!