These days all the open source GIS nerds are attending the FOSS4G (Free and Open Source Software for Geospatial information) congress in Sydney Australia. Because the BIM world and the GIS world are starting to overlap each other, BIMserver.org was also present at this conference. We made a contribution by presenting the CityGML extension for BIM and it’s implementation in BIMserver.org. For those of you who missed it you can find the sheets, the extension and some example files on foss4g.BIMserver.org.
Update: find everything on http://archive.opensourcebim.org/BIMserver/foss4g/