DETROIT (WKZO) -- General Motors will reveal a newly redesigned Cadillac CTS next month at the New York Auto Show. According to Vice President Bob Ferguson, sales for the previous version of the CTS have fallen and it was time for a revamp.  Ferguson also says the Detroit-based automaker is getting ready to roll out a coupe version of the Cadillac ATS, the vehicle that in January was named North American Car of the Year.