Affects Version/s: 6.1.0 CE RC1
1) Navigate to 'Control Panel' -> 'Dynamic Data Lists'.
2) Click 'Manage Data Definitions'.
3) Click 'Add'.
Document Library is still listed when everything in the portal that used to be Document Library has not changed to Documents and Media.
4) Add the 'Document Library' field and edit it.
Type and Name still calls the field Document Library.