ISO 25010, "Systems and software engineering - System and software quality models" was published in March 2011.

The ISO 25010 standard defines 2 broad non-functional categories of requirements, "Quality in use" and "Product quality", articulated in 13 characteristics, many of which are further subdivided into sub-characteristics. This new standard replaces the previous ISO 9126 standard, heavily used both in requirements management and in testing.

To find out more, see my pdf presentation: http://www.analisi-disegno.com/requisiti/ISO25010-en.pdf

I have published Requirements-by-Example, a requirements guide.
It can be found at
http://www.analisi-disegno.com/requisiti/Requirements-By-Example.htm

The goal of this guide is to help practitioners to:
- reduce time and costs to identify requirements and eventually make a
first draft requirements specification (even if the guide is
methodology independent, and does not assume the need to do a formal