Cadillac has confirmed it will debut its new flagship luxury sedan, the XTS, at the LA Auto Show on November 16th. While details of the powertrain have been kept secret, we do know it will be the first production model to make use of the brand’s new CUE telematics system.

Using an 8-inch of optional 12.3-inch color screen the CUE system is designed to offer maximum geek capability while also being easy to use for Luddites with big graphics and simple controls. Also of note is that it offers iPad like functionality with motions like tap, flick, swipe and spread.

Measuring 203.5-inches in concept form, the XTS is a total of 3.5-inches longer than an S-Class, making this one classically huge Caddy.

Powering the concept was a twin-turbo direct-injection 3.6-liter V6 mated to an electric motor, making 350-hp and 295 lb-ft of torque. Rumors have suggested the production model could get a non-hybrid version of this same motor, making similar power to the concept. Also look for high-tech innovations like a magnetic ride control suspension.

GALLERY: Cadillac XTS Concept

See AutoGuide’s complete LA Auto Show preview here

Cadillac will move ahead with production plans for its new flagship XTS luxury sedan, with the vehicle remaining mostly unchanged from from the concept car shown at the Detroit Auto Show earlier this year. Slated to replace both the STS and DTS, the XTS won’t quite compete head-to-head with the Lexus LS, BMW 7 Series and Mercedes S-Class, due mostly to a slightly smaller interior and the lack of a rear-wheel drive. But don’t worry, XTS will at least be available as an AWD model. It is, however, longer and wider than an S-Class.

According to a report by Motor Trend, Cadillac is not only intent on keeping the exterior style of the concept, but is also planning on retaining the impressive interior – that easily rivals segment leaders like the Audi A8.

Shown as a plug-in hybrid in concept form, using an electric motor, lithium-ion battery and a 3.6-liter direct-injection V6 gasoline engine making a total of 350-hp, this drivetrain is unlikely. GM has recently admitted that the company’s plug-in hybrids are to be limited to the Volt and Opel Ampera in Europe, due to short supply of parts. However, a non-plug in hybrid system is a possibility. There’s also reason to believe that instead of a typical V8 under the hood, GM will deliver a rumored twin-turbo V6.

GALLERY: Cadillac XTS Concept Unveiled in Detroit

GALLERY: Cadillac XTS Concept

[Source: Motor Trend]

During GM’s product technology even held yesterday CEO Fritz Henderson confirmed that the automaker’s top-tier Cadillac brand will bring a new flagship sedan, as well as an entry-level sedan to market shortly.

The new high-end model will replace the DTS and is reportedly to be called the XTS. This full-sized luxury sedan will be based on the same platform as at the 2010 Buck LaCrosse and will be offered in both front-wheel drive and all-wheel drive configurations. The vehicle will reportedly use design cues from the Cadillac Sixteen Concept.

The most exciting news, however, comes from the lower-end of the luxury spectrum where Cadillac says it will build a new model to compete directly with the BMW 3 Series.

“We are determined to repeat what CTS has already achieved in design, quality, driving dynamics, performance and fuel economy to grow our presence in this high-volume and highly competitive segment,” said Henderson.

Unofficially known as the ATS, this new model will initially be offered only as a sedan in rear-wheel and all-wheel drive, but a coupe is likely if the sedan sells well.

Additionally, GM re-confirmed that the CTS Sport Wagon and new 2010 SRX will go on sale this month. The SRX will be offered with both a direct-injection 3.0-liter V6 as well as an optional turbocharged 2.8-liter V6.

Official release after the jump:

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