Dean Hall has released some new, work in progress screenshots of the improved buildings being incorporated into the stand alone Day Z game, due out for Christmas.  He notes that these are unfinished but they look pretty enough to me, the intention is to have most if not all buildings within the game world enter-able so that players can explore and search for loot in more locations.

Personally I most want to see how they update the zombies, the mod had some rather messy animations and laggy resource hogging dead folk. Dean talked about reducing the bone count on them in a recent show and indicated that should allow more of them to be shown on screen without such a huge performance hit.