No one knows so far, plus we do not know will it be patch or new game totally. Maybe game downloads in the "background" but does not let access to full game until official release date. But that all is mine personal guessing (looking on how some other companies did similar stuff, like Blizz for example)
But as I said dunno mate but anyhow considering on amount of stuff that will be in that patch (just look on audio stuff alone) it will be a
BIG patch my guess is minimum 10gig.
So make space on hard drive in case you are low on space
