Today is a good day for sports car fans. Perhaps even a great one. The 2013 Porsche Boxster has been unveiled online, with some styling new curves and slightly better performance.

A new 2013 Chevrolet Corvette 427 Convertible Collector Edition has also made its way onto the web, packing 505 horsepower from a 7.0-liter (or 427-ci) LS7 engine among other unique features.

BMW has decided to add another category of M Performance vehicles to its lineup, slotting between the standard models and the full-on M Division cars--and likely including diesels.

2013 Porshce Boxster previewed

2013 Chevrolet Corvette 427 Convertible Collector Edition

BMW M Performance range to debut in Geneva

Motor Authority content will now appear in The Washington Post

Could the Toyota NS4 Concept preview the next Camry?

2013 Volvo V40 spy shots

2012 Fiat 500 Abarth priced from $22,000

Is Cadillac working on a sub-SRX crossover?

Audi confirms a clean diesel option for the 2013 A8 sedan

Ford and Hyundai top Polk and J.D. Power loyalty studies