The International Standardization Organization ISO has published ISO 16739, "Industry Foundation Classes (IFC) for data sharing in the construction and facility management industries".
The new IFC release IFC4 is now also accepted as an ISO standard. ISO 16739 has reached the status of a published International Standard, and the ISO deliverable is available at the ISO Store.
This marks another important milestone on making IFC the only true open BIM standard.
FONTE: BUILDING SMART