I will take a wild guess of it being.. around 22-28 gb for the base game (not including any dlc content, or extra content on extra disks, and not including any patches, and not including save file sizes).
Post patches and dlc I will say the game might take up in the neighborhood of 42-48 GB, which wouldn't surprise me at all considering The Witcher 2 on my computer is around 32 GB (18 or 25 GB base, don't remember) but we are expecting far, far more content than before.
Also I'm surprised there's no optional poll. If you need an idea:
File Size Guesses/Expectations:
<8 GB: Expecting MS Paint version
9-17 GB: CDPR are Technology Wizards
18-26 GB: Similar size as the previous titles
27-35 GB: I might need to clear some space on my drive
36-44 GB: I'm wiping my SSD to make room, as I vote in this poll
45+ GB: I'm buying an extra SSD just in case
i want to say osef (as much gb as they want ) now we have 3 or 4 terra hardware and 250 gb ssd . even if we have no place we'll erase to play as usual or buy a new disk and for exemple titan fall was 50 GB So witcher 3 can be the same
OnOnOnOn gog website under questions section says stay tune for pre-download so it looks like they are preparing something just hope it will be good few days before, 60GB with my download speed 10 Mbs will take few days...
That's roughly what I see at Speedtest too.
And yes. Megabits, not Megabytes. That means you have roughly 1 Megabyte per second, which in reality means a download speed of around 800KBps.
(And I don't know about you, but I only get that in-country. If I'm downloading from somewhere like GOG, I get less than half of that. Which, to be honest, is the main reason why I usually buy from Steam. They have servers here.)
I'm really concern about the filesize since I don' have a decent bandwidth but when I learned that the physical copy won't get a Steam code I decided to pick the Steam version since I really enjoy that platform. I don't know anything about assets and what not but something tells me that this game won't go below 40GB.