No specific reason why that should happen.. but it should list device by device as before, then when that's done it will write into the database. Nothing that really changed a lot to not make this not work like before.
If it's stuck for so long, take a look if the lock.db file exists in /tmp/disklocation/, if it does, delete it and check if the install continues. Might be that I should delete the temp lock file during upgrade, so I will add that now.