Mitnichten, mein Freund, mitnichten.
" Open Source Industry Australia Limited (OSIA), Australia's open source industry body, welcomes Microsoft's acceptance of the new gold-standard in office file formats, ODF. ODF will now be interoperable with the most widely implemented office suite in the country. But OSIA cautions 'buyer beware'. Microsoft have announced development of a conversion plugin for the next version of Office, rather than adding ODF as a default option for saving and opening documents. Conversion does not protect against data loss. OpenOffice.org, the major competitor to MS Office, already uses the OpenDocument Format as the default for saving documents."
http://www.osia.net.au/content/view/full/532