Architecture Modeling - IEEE 1471 has been adopted by ISO

ISO has published ISO/IEC 42010:2007, Systems and software engineering - Recommended practice for architectural description of software-intensive systems. The text of this ISO standard is identical to IEEE 1471:2000, and will serve as basis for the joint ISO and IEEE revision.

http://blogs.msdn.com/mikewalker/archive/2007/08/27/ieee-1471-has-been-adopted-by-iso-as-iso-iec-42010-2007.aspx

Enterprise Architecture