GM has revealed details and full specs with its new 2011 Cadillac CTS-V Sport Wagon that will premiere at the 2010 NYIAS at the end of this month.
The 2011 Cadillac CTS-V Sport Wagon joins the company’s range of performance cars after the CTS-V Sedan and CTS-V Coupe models. 
In the 2011 Cadillac CTS-V Sport Wagon customers will have the same supercharged 6.2-litre V8 capable of unleashing 556 horsepower and 747 Nm of peak torque that is mated to a Tremec TR6060 6-speed manual gearbox, with an optional Hydra-Matic 6L90 6-speed automatic also available.
The 2011 Cadillac CTS-V Sport Wagon is harnessing its ponies in a civilised manner through the Magnetic Ride Control package, plus a set of high performance Brembo brakes and the 19 inch alloy wheels wrapped in Michelin Pilot Sport PS2 tires.
Market availability will start in US towards the end of the year so the 2011 Cadillac CTS-V Sport Wagon price will be announced at a later date. 
GM press release :
NEW YORK – Cadillac today unveiled the CTS-V Sport Wagon show car, foreshadowing the next addition to its V-Series performance line. It combines the performance and luxury of the landmark CTS-V Sport Sedan with the dramatic design of the CTS Sport Wagon.
“The CTS-V Sport Wagon is a natural extension of both the V-Series
and the CTS lineup, offering an uncompromising performance car to
enthusiasts who want the extra room of a wagon,” said Don Butler, vice
president for Cadillac marketing. “The V-Series Sport Wagon is another hallmark of the dramatic presence and power of Cadillac vehicles.”
The exterior is finished in Midnight Silver, first seen on the
Cadillac Sixteen Concept, and accented by lustrous Liquid
Silver-finished wheels and a black chrome finish on the grille’s mesh
insert. The rear fascia, upper spoiler and center high-mounted stop
lamp are also unique to the show car.
Inside, the CTS-V Sport Wagon show car is trimmed in
exclusive black leather with Alcantara accents. The upper section of
the instrument panel and upper door panels are covered in the same
premium leather, accented with midnight Sapele wood, while the
microfiber material and stitching is applied to the lower door panels,
pillars, console lid, headliner and steering wheel center. The show car
features fine-grain black leather-trimmed Recaro seats with Alcantara
seat inserts. The seat inserts are divided in the center and accented
with dark gray stitching, while the V-series logo is laser
etched into the seatbacks. Obsidian Black accents grace the center
stack, console, steering wheel and door panels. 
The show car’s bespoke color and trim elements hint at the potential
direction of color and trim in future Cadillac models. These elements
are not yet intended for production, but represent Cadillac’s desire to
gauge customer reaction to new color and trim options.
Production CTS-V Sport Wagon
The CTS-V Sport Wagon will go into production in late 2010,
with initial sales in North America, followed by export markets
including Europe and the Middle East. The new model rounds out the V-Series offerings, which include all variants of the CTS family’s sedan, coupe and sport wagon body styles.
Like its sedan and coupe stable mates, the CTS-V Sport Wagon
is powered by a supercharged 6.2L V-8, which delivers 556 horsepower
(415 kW) and is backed by either a six-speed manual transmission or a
six-speed automatic. A suite of technical and performance elements
complement the powertrain, including Magnetic Ride Control, Brembo
brakes and Michelin Pilot Sport PS2 performance tires mounted on
19-inch forged aluminum wheels.
Like the other CTS V-Series models, the Sport Wagon incorporates
a unique grille that doubles front-end airflow to help enable its
high-performance capabilities. It is also visually identified by an
aggressive front fascia and raised center section of the aluminum hood
that provides clearance for the supercharger. It rides on 19-inch
forged aluminum wheels available in painted or polished finishes.
The rest of the exterior carries the dramatic design of the new CTS Sport Wagon; the details of which include:

  • Signature V-shaped deck and tailgate motif
  • Large, vertical taillamps with light-pipe technology
  • Power-opening liftgate (via key fob or in-vehicle button)
  • CHMSL-integrated roof spoiler
  • Integrated roof load management system with available cross bars for a seamless appearance
  • Cargo management system with adjustable in-floor containment
  • Available panoramic UltraView sunroof.
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At the rear is a pair of 3-inch (76 mm) chrome exhaust outlets,
which caps a performance dual-exhaust system made of high-grade
stainless steel that will maintain a lustrous appearance longer than
ordinary stainless.
Of course, cargo capability is a hallmark of wagons and the V-Series
Sport Wagon delivers with 25.4 cubic feet (720 liters) of space behind
the rear seats and 58 cubic feet (1,644 liters) with the seats folded –
virtually doubling the available space of the sedan.
Supercharged performance
The 6.2L supercharged V-8 engine powers the CTS-V Sport Wagon – the same acclaimed engine found in the V-Series
Sedan and Coupe models. Rated at 556 horsepower (415 kW) and 551
lb.-ft. of torque (747 Nm), it is the most powerful engine offered in
Cadillac’s history.
The engine features an intercooled Eaton Twin Vortices Series™
(TVS™) supercharger.  This unique supercharger design employs twin
four-lobe rotors, twisted 160 degrees. Typical superchargers feature
three lobes twisted 60 degrees. The fourth lobe and added twist, when
combined with unique air inlet and outlet ports, create smoother, more
efficient airflow into the engine. In addition to improved overall
efficiency, this supercharger has superior noise and vibration
characteristics compared to more ordinary designs.
A pair of six-speed transmissions is offered in the CTS-V
Sport Wagon – a Tremec TR6060 six-speed manual with a dual-disc clutch
and a Hydra-Matic 6L90 six-speed automatic with steering wheel-mounted
shift controls. The steering wheel-mounted controls require no shift
lever movement and allow immediate tap up/tap down gear selection.
Performance Algorithm Shifting provides the automotive transmission
with a performance-oriented shift pattern during sustained
high-performance driving. As with many Cadillac models, the driver
needs only to slide the shifter into the manual “gate” to put the
transmission into a performance mode.
Torque is channeled through the six-speed transmissions to a
high-performance rear axle that features a limited-slip rear
differential within a cast iron housing for greater thermal management
and asymmetrical half-shafts to smoothly manage the supercharged
engine’s incredible torque. The unique design includes alternately
sized half-shafts that also help dynamically balance the oscillation of
torque from side to side, effectively eliminating “power hop.”
Magnetic Ride Control
The V-Series achieves exceptional levels of road-holding
performance, but also maintains the poise of a luxury car in “regular”
driving conditions. The technical enabler of this dual-mode driving
character is Cadillac’s landmark Magnetic Ride Control. It is standard
on the CTS-V Sport Wagon and is the world’s fastest-reacting
suspension technology. It uses shocks controlled by advanced
magneto-rheological technology, rather than mechanical valves, to
greatly accelerate response time and precision.
Electronic sensors at all four wheels literally “read the road”
every millisecond, making constant adjustments to damping to create
virtually instantaneous and extremely precise control of body motions.
This is of particular benefit for a high-performance car because it
helps keep the car very composed during hard cornering, acceleration,
braking and other dynamic maneuvers.
The Magnetic Ride shocks also enable a broader range of damping
control to optimize the ride and handling for all driving conditions.
In the CTS-V Sport Wagon, an extra measure of control is
offered, with two selectable modes (Tour and Sport), enabling the
driver to tailor the suspension for grand touring or more spirited
performance driving.
Cadillac pioneered Magnetic Ride Control, bringing it to production
first in 2002, following decades of research on magneto-rheological
science. Today, the technology appears only on a short roster of the
world’s most elite vehicles, including Cadillac V-Series models, the Escalade luxury SUV and the STS and DTS luxury sedans.
Brembo brakes and Michelin Pilot Sport PS2 tires
The CTS-V Sport Wagon incorporates sophisticated braking and
tire systems, in partnership with two companies renowned for
high-performance technology: Brembo and Michelin. Brembo brakes are at
all four corners and include powerful, six-piston calipers in the front
and four-piston calipers in the rear.
Large vented rotors enable strong initial braking force while
optimizing heat resistance and eliminating fade. The brake rotors from
Brembo are manufactured with “dual-cast” technology that combines cast
iron and aluminum, resulting in superior performance and weight
reduction.
The CTS-V Sport Wagon also includes an electric parking
brake, which allows for optimal dead pedal placement, which is
important for high-performance driving.
Michelin partnered with Cadillac engineers to develop an exclusive Pilot Sport PS2 tire specifically engineered for the CTS-V. The tires support high levels of grip in track conditions, while also affording excellent performance on the road.
Comfort, style and technology
The interior of the CTS-V Sport Wagon is shared with the sedan, including streamlined instrumentation, LED lighting and hand-cut-and-sewn accents.
The CTS-V Sport Wagon production model will come standard
with performance seats featuring perforated sueded microfiber inserts
designed to hold the driver and front passenger in place during
cornering. Recaro performance driving seats are optional and provide
excellent support for spirited driving. These 14-way adjustable
performance seats include pneumatic bolster controls in the seat
cushions and backrests.
Complementing the performance seating are a thick steering wheel and
a gauge package designed for easy, at-a-glance reference during
performance driving. Large instruments have bold readouts, including an
LED-lit “tracer” function in the tachometer that flashes as the engine
nears the red line. The gauge layout includes a boost gauge and a
lateral acceleration display.
Obsidian Black accents grace the center stack, console, steering
wheel and door panels. The production steering wheel and shifter are
available in Alcantara, providing the luxurious character of suede.
These accents are elegant to the touch and aid the driver during
support high-performance driving. Just like every CTS, the V-Series includes a hand-stitched instrument panel, door trim and center console.
Leading-edge infotainment features extend to the V-Series.
Standard features include an advanced navigation system with a
deployable screen, Bose 5.1 digital surround audio, factory-installed
Bluetooth phone integration and a 40-gigabyte hard drive that allows
the customer to store a large library of music files. The system
uploads files via a USB port or the in-dash DVD/CD drive and allows
stored tracks to be searched and selected through the radio controls.
About Cadillac
Cadillac has been a leading luxury auto brand since 1902. In recent
years, Cadillac has engineered an historic renaissance led by artful
engineering and global expansion. More information n Cadillac can be
found at media.cadillac.com.
2011 CADILLAC CTS-V SPORT WAGON SPECIFICATIONS
Overview

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Model: 2011 Cadillac CTS-V Sport Wagon
Body style / driveline: 4-door sport luxury wagon, RWD
Construction: unitized welded steel body with direct-mounted front cradle and
rubber-isolated, multi-link independent rear suspension
EPA vehicle class: wagon
Manufacturing location: Lansing Grand River Assembly, Lansing, Mich.

Engine

  6.2L Supercharged V-8
Displacement (cu in / cc): 376 / 6162
Bore & stroke (in / mm): 4.06 / 103.25 x 3.62 / 92 mm
Block material: cast aluminum
Cylinder head material: roto-cast aluminum
Valvetrain: overhead valve, two valves per cylinder
Fuel delivery: 1.9L supercharger with intercooler; sequential fuel injection
Ignition: direct-mount ignition coils
Compression ratio: 9.1:1
Horsepower (hp / kW @ rpm): 556 / 415 @ 6100*
Torque (lb-ft / Nm @ rpm): 551 / 747 @ 3800*
Recommended fuel: premium required
Maximum engine speed (rpm): 6200
Estimated fuel economy
(city / hwy):
14 / 19
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Transmissions

  Tremec TR6060 Hydra-Matic 6L90
Type: six-speed manual; fully synchronized with single overdrive six-speed electronically controlled automatic overdrive with torque converter clutch
Gear ratios (:1):    
First: 2.66 4.03
Second: 1.78 2.36
Third: 1.30 1.53
Fourth: 1.00 1.15
Fifth: 0.80 0.85
Sixth: 0.63 0.67
Reverse: 2.90 3.06
Final drive ratio: 3.73 3.23

Chassis / Suspension

Configuration RWD
Differential: limited-slip
Front: independent SLA; 29-mm hollow stabilizer bar; elastomeric handling and
ride bushings; 65-N/mm spring rate; Magnetic Ride Control with
electro-magnetically controlled shocks
Rear : independent SLA; 24-mm hollow stabilizer bar; elastomeric trailing arm
bushing; 90-N/mm spring rate; Magnetic Ride Control with
electro-magnetically controlled shocks
Steering type: power-assisted rack-and-pinion
Steering ratio: 16.1:1
Steering turns, lock-to-lock: 2.7
Turn circle (ft / m): 37.9 / 11.55
Chassis control: four-channel StabiliTrak w/ brake assist

Wheels and tires

Wheel size and type: front: 19 x 9-inch; forged alloy, 5-lug
rear: 19 x 9.5-inch, forged alloy, 5-lug
Tires: Michelin Pilot Sport PS2
front: 255/40ZR19 (96Y) high-performance summer tire
rear: 285/35ZR19 (99Y) high-performance summer tire

Brakes

Type: four-wheel disc with four-channel ABS, hydraulic brake assist and dynamic rear brake proportioning
Rotor type and thickness (in / mm)  
Front : 15 x 1.26 / 380 x 32, vented, co-cast
Rear: 14.7 x 1.1 / 373 x 28, vented

Dimensions
Exterior

Wheelbase (in / mm): 113.4 / 2880
Length (in / mm): 191.3 / 4859
Height (in / mm): 59.1 / 1502
Width (in / mm): 72.6 / 1842
Track (in / mm): front: 61.8 / 1570
rear: 62 / 1575
Curb weight (lb / kg): 4390 / 1995
Weight distribution (% front / rear): 52 / 48

Interior

Headroom (in / mm): front: 38.8 / 986
rear: 37.2 / 944
Legroom (in / mm): front: 42.4 / 1078
rear: 35.9 / 913
Shoulder room (in / mm): front: 56.7 / 1441
rear: 57.4 / 1390
Hip room (in / mm): front: 55.1 / 1400
rear: 54.1 / 1375

Capacities

Seating capacity (front / rear): 2 / 3
EPA passenger volume (cu ft / L): 96.5 / 2732
EPA cargo volume (cu ft / L): 25.4 / 720 (behind rear seats)
58 / 1644 (rear seats folded)
Trailer towing maximum (lb / kg): TBD
Fuel tank (gal / L): 18 / 68
Engine oil (qt / L): 6.3 / 6
Cooling system (qt / L): 12.42 / 11.75

 

Source: GM