GM has announced that will debut a series of new designs, technologies and accessories at this year’s edition SEMA Show, together will a number of show cars that might inspire aftermarket customizers.
In terms of design and accessories, GM will introduce the Z-Spec Concept which will be detailed through customized version of the 2011 Chevy Cruize, Volt and Spark.
As far as performance, Chevrolet will use the customized Camaro and Corvette models, which will include the Camaro Red
Flash and the Camaro SSX Track Car plus
the Z06X Track Car and Corvette Jake. 
GM will also present their E-ROD crate engines, which they claim, are the ‘only high-performance V-8 engines that are
designed to meet new emissions regulations’.
GM press release :
LAS VEGAS – At this week’s annual SEMA Show, Chevrolet will showcase how new designs, technologies and accessories can inspire aftermarket customizers to elevate the driving, visual and environmental appeal of the brand’s new products.
Chevrolet’s SEMA exhibit will introduce a new concept for a cohesive design approach to Chevy accessories and the best of the aftermarket, with a trio of show cars featuring the brand’s new family of small cars. The Z-Spec Concept represents Chevrolet designers’ ideas for a potential line of accessories, and will be showcased via concept versions of the all-new 2011 Chevy Cruze compact, as well as the new Volt extended-range electric vehicle and the future Chevy Spark minicar.
Chevrolet will debut concepts that extend the design and performance attributes of its performance cars, with a series of Camaro and Corvette concepts, including show cars emphasizing new expressions of each car’s track capabilities. Chevrolet will announce two new special edition models for Camaro that will be produced in 2011, the Camaro Synergy Series 2011 and XM Accessories Appearance Package.
Two additional Camaro models will debut as SEMA concepts, the Camaro Red Flash and the Camaro SSX Track Car, each containing a blend of Chevrolet Accessories and new concepts from Chevrolet designers. Two Corvette concepts, the Z06X Track Car and Corvette Jake will debut, offering different expressions of the car’s track accomplishments.
“SEMA 2010 provides an ideal platform to Chevy to showcase new products like the all-new Cruze compact and the revolutionary new Volt,” said Chris Perry, vice president of Chevrolet marketing. “Car and truck enthusiasts have a natural connection to Chevrolet, and we intend to extend that with new design concepts and accessories aiming to make our products even more inspiring to customizers.”
GM Performance Parts will use SEMA as a platform to expand its series of E-ROD crate engines, the only high-performance V-8 engines that are designed to meet new emissions regulations being enacted in many states for vintage and classic cars.
Chevrolet’s press conference at SEMA will be Tuesday November 2 at 11 a.m. PST  The SEMA Show is Nov 2-5 at the Las Vegas Convention Center.  

Source: GM