Well yeah, but it seems asinine to expect people to waste their digital key when they already have the game installed. Many people probably gave the extra code to a friend.
This is getting a bit silly, waiting this long with no info. I got the $140 tier which didnt come with the expansion, so how am I going to play the white march without uninstalling the game that I've already put a bunch of time into and going and buying a steam/gog version?
Any further word on this? It would be a pretty ridiculous oversight to not let backers add the expansion because all the versions are incompatible. Or make them go and download the steam/gog version (and waste their digital code when they already have the game), which defeats the point of having the disc version in the first place. ugh.