Besides the info provided the info on the wiki: https://github.com/DBCDK/bibdk/wiki/Installation-af-bibdk the following procedure for downloading the bibdk-profile including the latest Drupal core (or any version specified) can be used:

1. clone this repo to e.g. your local web-root
2. Run the following command from the command-line: $ drush make --working-copy --dbc-modules=develop --no-gitinfofile --contrib-destination=profiles/bibdk prof/dist.make [NAME]