For the 2012 model year, Caddy has elected to give the CTS V6 portfolio a modest refresh, including a revised front fascia. However, the Sigma II-based Caddy will no longer offer the six-speed manual transmission in the 3.6-liter Premium and Performance models that customers can currently opt for in the 2011 model. We can only guess the reason for this is due to the fact that very few CTS 3.6-liter Premium and Performance models were sold with the manual. Don’t worry, Cadillac will still offer the six-speed where it counts in the CTS-V.
If only they got rid of the base 3.0L V6 engine for the 2012 model year, as the engine is seemingly meaningless for the segment the CTS competes in.
Source: Inside Line