For the 2013 MY CTS, it appears the Powertrain Limited Warranty, Roadside Assistance and Courtesy Transportation warranty coverages are changing to 6 years/70,000 miles instead of 5 years/100,000 miles.
Taken from the Cadillac web page:
WARRANTY AND COVERAGE
Cadillac 4-year/50,000-mile Bumper-to-Bumper Limited Warranty with no deductible
Cadillac 6-year/70,000-mile Transferable Powertrain Limited Warranty with no deductible for 2013 models (5-years/100,000-miles for 2012 and older models).
Cadillac 6-year/70,000-mile Roadside Assistance for 2013 models (5-years/100,000-miles for 2012 and older models).
Cadillac 6-year/70,000-mile Courtesy Transportation for 2013 models (5-years/100,00-miles for 2012 and older models)
Taken from the Cadillac web page:
WARRANTY AND COVERAGE
Cadillac 4-year/50,000-mile Bumper-to-Bumper Limited Warranty with no deductible
Cadillac 6-year/70,000-mile Transferable Powertrain Limited Warranty with no deductible for 2013 models (5-years/100,000-miles for 2012 and older models).
Cadillac 6-year/70,000-mile Roadside Assistance for 2013 models (5-years/100,000-miles for 2012 and older models).
Cadillac 6-year/70,000-mile Courtesy Transportation for 2013 models (5-years/100,00-miles for 2012 and older models)