If it seems to you that just about every year the powers-that-be change the classes in Le Mans racing, well, you're not far off. The racing categories for various vehicles is constantly in flux, with organizers at the ACO forever seeking out the right balance between various categories to keep the racing action competitive. And so it should come as little surprise that the ACO has tweaked the regs yet again for the 2012 championship.
Following the streamlining of various GT classes into one GTE category, the ACO is preparing to launch a new GTC class that will allow less heavily modified vehicles to compete against each other amidst all the purpose-built racers.
The new class is similar to the GT Challenge category currently in place in the American Le Mans Series, however while the ALMS GTC category is currently limited exclusively to the Porsche 911 GT3 Cup, the European series has already added the Ferrari F430 Challenge (which should be readily accessible now that it's been replaced by the 458 Challenge) and the Lotus Evora GT4/GTC to the expanding list of approved vehicles.
Drivers in the LMS GTC category will follow the same rules as the GTE-Am class, with one professional driver rotating with one or two additional amateur racers in each car.