This is amazing. It is free for this weekend only (1-4th March) but even if that's the case, the full game is yours for the life of your PS Plus subscription.
Get it while its hot if you don't have it already
WARNING: 40.8GB download for those of you on data caps!
To download - be sure to go to 'Exclusive Discounts'
Also - news just in, it is not just for PS+ Members, it is for anyone with a PS4!