Several recent reports have hinted that Cadillac's XTS concept would eventually replace the DTS as the flagship model for the surviving Detroit luxury maker. New rumors suggest that it may end up a notch down from the top in a new product hierarchy.

Word of the new model has come from CEO Ed Whitacre, although the no details have been given beyond that. Speculation has suggested that a stretched version of the CTS platform is the best option for the sedan's foundation. Power will be sent to the rear wheels, but we'll have to wait longer for details on the engine size and configuration.

Cadillac has become much more aggressive with it's styling and performance in recent years.  The XTS is evidence of this strategy, and the upcoming AT is expected to follow suit.  Considering the direction of the luxury segment, these new vehicles have a good chance at success.  Can Cadillac get away with a production car as big as its Sixteen concept?  This will be a good opportunity for them to prove they can still do big cars well, but in a small car world.

[Car and Driver, autoblogLeft Lane News]