http://blogs.technet.com/b/uspartner_ts2team/archive/2010/05/27/office-2010-tech-guarantee.aspxQ: (from Mailee) Could you please confirm if the below information applies to upgrades as well? A: “Yes”, from the www.office2010.com/techguarentee FAQ website: http://office2010.microsoft.com/en-us/tech-guarantee/microsoft-office-2010-technology-guaranteeen-USTelligent Evolution Platform Developer Build (Build: 5.6.50428.7875)