there was a thread on here somewhere that had the information on 2012 370z's from Nissan themselves. and there will be no refresh. seems like everything will pretty much stay the same. not sure where that thread went though...
EDIT:
Found some info for ya
2012 Nissan 370Z Coupe/NISMO 370Z
For 2012, the Nissan 370Z Coupe remains one of the most vibrant and dynamic sports cars available in North America. The 370Z Coupe is again available in three models, 370Z Coupe and 370Z Coupe Touring and the NISMO 370Z, which features unique performance and design attributes. There are no major specification or equipment changes for the 2012 model year.
Key features of the 2012 Nissan 370Z Coupe and NISMO 370Z include:
• The 370Z and 370Z Touring are each available with a standard 332-horsepower 3.7-liter DOHC V6 engine with Variable Valve Event and Lift Control (VVEL) and choice of 6-speed manual transmission with an available SynchroRev Match® synchronized downshift rev matching system or a 7-speed automatic transmission with paddle shifters
• The limited production NISMO 370Z features 350 horsepower and 276 lb-ft of torque, exclusive H-configured exhaust system design, a close-ratio 6-speed manual transmission with SynchroRev Match®, and NISMO-tuned suspension
• The NISMO 370Z features unique 5-spoke 19-inch RAYS forged aluminum-alloy wheels mounted with Yokohama ADVAN Sport Y-rated high-performance tires, Nissan Sport Brakes and a Viscous Limited-Slip Differential (VLSD)
• The NISMO 370Z also includes functional and fully integrated aerodynamic body pieces, including an extended front nose, fully integrated chin spoiler, side sills, a unique rear and functional rear spoiler
• A dramatic interior utilizing an innovative driver-centric three-layer design which groups items by how a driver sees information, operates the controls and is held in place – so drivers feel completely connected and engaged whenever and wherever they drive
• Available technology features include a Nissan Hard Drive Navigation System with 7-inch VGA touch-sensitive display, USB connectivity and iPod? connection, XM NavTraffic® with Real-Time Traffic Information and XM NavWeather™ (XM® subscription required, sold separately), Bluetooth® Streaming Audio, Nissan Intelligent Key® and a Bluetooth® Hands-free Phone System
The 2012 370Z Coupe and NISMO 370Z go on sale in fall 2011.