Cadillac today revealed the new 2009 edition of the XLR Roadster, featuring styling and model enhancements providing more dramatic design and technology. For 2009 XLR will be offered in only two versions: luxurious XLR Platinum and the high-performance XLR-V. The XLR Platinum is powered by a 4.6L Northstar V-8 engine that delivers 320 hp, while the XLR-V is powered with a 443 hp 4.4L Supercharged Northstar V-8 engine.