We had talked a lot about why it is smart to buy Office 2010 before and now Microsoft has announced a beta release of the product which is availble for free download in English, French, Spanish, Russian, Chinese, and German.
You can download a copy from here
However since this is a beta version it will expire in October 2010, exactly after a year. Also this version requires activation which you would be prompted for once you launch any of the component e.g. Word, Excel.