@Adam Azarchs

I think you mean that OpenOffice can read .docx files as, of course, can MS Office 2007. Careful about misinformation. I'm sure that Microsoft wish to perpetuate exactly that misunderstanding to promote MS Office as the 'only' viable choice, but, as stated in an earlier comment, Microsoft are unlikely to progress OXML as an open standard, thus leaving us exactly where we were before, using Microsoft current proprietry formats by default.