Yes, the P81 RS2 has been announced but details are not available yet. I posted what I know about the car on the Motonica thread, which you can find in this on road forum.
The P81 platform is essentially the same since introduction in 2009, so 2012 will be the 4th year for the car, and everything from the original P81 to the current RS is interchangeable, so it's not like have to buy a new car each time and you can actually choose which parts to use. For example, on my car, I do not use all the RS parts.
If they follow what they normally do, the RS2 and RS2 conversion kits will be made available around February or March, but we'll wait and see on that. If you do purchase a P81 RS (contact me before purchasing for exact details) you will get an RS2 conversion kit when it is made available.
Definitely go to the local track(s) and talk to the guys that race and that should make your decision a bit easier.