In an interview with GameSpot, CD Projekt Red's community manager, Marcin Momot, announced the amount of space that Blood and Wine, the second and final expansion for The Witcher 3: Wild Hunt, will occupy on our hard drives.
According to Momot, sizes will vary from 10 GB to 15 GB, because it depends on the platform you'll play on (PC, PS4 or Xbox One). The expansion seems particularly large, especially if compared to the last one, Hearts of Stone, which was 3.5 GB on PS4 and 4.73 GB on Xbox One (PC was bigger than both combined at around 10 GB). However, Blood and Wine promises to offer more new content than seen in the previous expansion, which explains it.
In addition, Blood and Wine will also be accompanied by a day one patch, but Momot didn't reveal any details. The Witcher 3: Blood and Wine will be available from May 31 on PC, PlayStation 4, and Xbox One.
Thanks, GameSpot