what do you mean by "new"? there will be no new rally2, as homologation of the class is finished. you can buy the same rally2 that is running now, with new upgrades if they'll do some. And Rally2s...
Some people should be jumping for joy that this is realistic top class discussion.
BRC Racing Team who ran (& developed) Paddon's i20 Rally2 to 2x ERC Titles show the car isnt totally useless... https://www.fiaerc.com/en/news/paddons-success-means-theres-a-new-erc-team-on-top ...

New in the sense that the car is new for you. Customer which does not have a Hyundai Rally2 buying one, like you outlined
WRC mainclass from 2027