I still believe it'll be a real GTRx, no doubt with amateur, pro and real sim modes. The life cycle of GTR series is long and the prestige it has with GTR2 (and Race series, aka GTR 2.5) is too much to sacrifice for possibly short term gain with casual gamers.. That are looking for GRID, NFS type of games and i can't believe SimBin going full 180 on that. I could be wrong, of course..
I have faith still, RRRE wasn't as bad as i feared and that is a product aimed for casual/F2P gamers with a slight HC user support promised (it'll probably never be a full sim, but damn close.. SimBins Gran Turismo, if you will.)
I think they are aiming between rF2 and NFS, definitely competiting with rF2 userbase and honor. Just speculating, that's what i would do.