It seems there's really good news for us. The 5.2 version has more information on 2007, and a paragraph on 2010 that is probably all we need to get 2010 working.
The spec is available here: http://opendesign.com/files/guestdownloads/OpenDesign_Specification_for_.dwg_files.pdf -- Rodrigo Rodrigues da Silva http://garoa.net.br http://polignu.org http://gnu.org
