Ugh... I kinda need to make the announcements early, since certain people can't keep things quiet until the announcement dates.
ITCC 5 announcement #1:
Alfa Romeo has signed on as a manufacturer in ITCC 5. The car they're offering is the Alfa Romeo GT 3.2 V6 24V. The car is an excellent car to drive, and closely matches what ToS deems appropriate for ITCC 5. The speed and handling are on par with the other cars - including the ones we haven't announced yet.
Another thing to notice, is that ITCC 5 will have success ballast. The announcement is coming since ToS has supported the idea, and this is merely confirmation of what you can already find in the first/original post of this thread. The system is under development, but the maximum will be 50 kg., meaning that all cars must weigh no less that 1050 kg. before ballast.
The final thing to mention is that the ToS will be announcing weekly reveals of new cars. Stay tuned, we have lots of cars planned for testing, and we're just getting started.