Alex Brown, the convener of the 2008 Ballot Resolution Meeting, on the status of the MS-OOXML standard (ISO/IEC 29500) and how Microsoft has lived up to its commitments. I guess no-one here is surprised (also Brown genuinely is, it seems), that things do not look well:
http://www.adjb.net/post/Microsoft-Fails-the-Standards-Test.aspx
"Danish expert and BRM delegate Jesper Lund Stocholm, running an analysis of Office 2010 files wrote: “It has been the fear of many that Microsoft will never, ever care at all about the strict conformance clause of ISO/IEC 29500, and my tests clearly [are] a sign that they were right.”"
"Most worrying of all, it appears than Ecma have ceased any proactive attempt to improve the text, leaving just a handful of national experts wrestling with this activity. It seems to me that Microsoft/Ecma believe 95% of the work has been done to ensure the standard is “useful and relevant”. Looking at the text, I reckon it is more like 95% that remains to be done, as it is still lousy with defects."