It must be said that i'm not a fan of Race 07, and while i welcome the addition of GTRE, there are a number of missing features such as headlights, night racing and above all, live track technology which place it behind GTR2 IMO (remember: this is just my personal opinion).
I have been avidly watching this mod for about 1 year, and finally, it looks as if release is imminent. Conceived by the GT Italia mod team, the 2006 mod has 5 "new" cars to choose from, as well as revised physics to reflect the relative performance development of the cars (anyone struggling in the MC12 must wonder how it won the Spa 24 hour!).
Here's the spiel:
The FIA GT 2006 Mod for GTR2 derives by the experience made with the Campionato Italiano GT "Sara Assicurazioni" 2005 mod, which had a great succes everywhere. On this basis we tried to offer to the community a further better mod, with new cars, new phisycs, updated models and unique characteristics.
You'll be able to play the whole 2006 season of the International FIA GT Championship, with all the tracks and all the main cars which really raced in that season. Moreover you'll have different starting grids for every track, according with the real entry lists, and the liveries will change in their particulars according with a particular track. At the Spa 24H ALL the cars will have the special livery used for that race in the real life.
Great attention has been used to create the drivers' files, in order to respect the real forces of the 2006, and from a race to the next one the first classified drivers will have ballasts on their cars, according with their results.
Finally 5 new cars will be available: the astonishing Aston Martin DBR9, the Corvette C6R, the beautiful Ferrari F430 GT, dominator of the GT2 class, and its eternal challenger, the Porsche 997 GT3 RSR, and the "little" Porsche 997 GT3 Cup. Moreover some original cars had been updated to respect the upgrades they had in the 2006 season: Saleen S7R Zakspeed Spec2006, Maserati MC12 Spec2006, Lamborghini Murcielago R-GT Spec2006, Dodge Viper CC Spec2006, Porsche 996 GT3 Special Prospeed Competition.
A great thanks goes to everyone who helped me to make this mod, their names are in the next pages!!! To proceed click on the mod logo.
Enjoy by TopGun and the GT-Italia Mod Team!!!
Personally, i am dying to try the new Ferrari, and the C6, and a proper Aston... all of them in fact. I am hoping that, if it turns out to be as good as the group's previous offering, we might adopt the series for one of our GTR2 leagues, assuming that they are to continue running alongside GTRE.
Anyways, just thought I'd give you the heads up.

Screenshots, renders and more info available at
http://gt-italiamod.drivingitalia.net/GTR2/indexgtr2_e.html