Drive Club will release this October on PS4.
Drive Club was originally intended to be a Launch title for the PS4 and offered as a free game for PS Plus subscribers. However the game was hit with delays and now it will be released this October. With said news, Sony has decided to notify PS4 owners that there will still be a free version of Drive Club for PS Plus members only with less content than the retail version.
No other news has been given so stay tuned for any updates.