Microsoft has revealed its upgrade plans from Office 2007 to Office 2010 in a blog post to resellers.
The post, which has now been removed from the Microsoft site, said, "Sell Office 2007 today and your customer can download Office 2010 free."
In the Google archive of the Microsoft blog, the company said customers will receive a free download of Office 2010 if they buy a qualifying Office 2007 product (with or without a new PC) from an authorised reseller between 5 March and 30 September 2010.
Users of Office Standard 2007 will be able to upgrade to Office Home and Business 2010. Office Small Business 2007 users will be offered Office Professional 2010, as will users running Office Professional 2007.
To receive the free upgrade, users need to install and Activate Office 2007 by 30 September 2010, Microsoft said.