Its up!!!!!

[Felis]

To the guys with the 8 GB downloads on PS4, have you also downloaded the 1.7 GB add-on some days before it?
Maybe some have only 5.7 GB because a part was already downloaded before it as the add-on.

no i did not D: so .... that dosnt seem right XD didn't they say this thing would be 20 gigs by the end? so wheres the remaining data?

I think it mean that you need 20 GB free space, not that it will be 20 GB big.
It is a game that get patched regulary and there should be always enough space on the HDD for the patches. So the game reserve for itself 20 GB, I think.