Well, from what I know now this is all thats going to be downloaded:
First DL: 1,5roughly GB
Second DL: 11,5 GB
Third DL: 400 MB
Fourth DL: 6,5ish GB
I went to bed as the 6,5 one started, so I have no idea at all if theres any more patches/DLs that one, however that "orange" loading bar was about halfway when the 6,5 GB dl started.
Anyways, tried the game and it looks to be my kind of game Hail the Siths!