From the information below - looks like it was released to WSUS by mistake.
http://computerworld.com/action/article.do?command=viewArticleBasic&articleId=9075780
The software, which will be activated on a trial basis for Office users In Chile, Italy, Span and Turkey, will expand the Office Genuine Advantage (OGA) initiative through which Microsoft detects illegitimate copies of the Office suite and blocks their owners from downloading free files and non-security-related updates.
http://www.microsoft.com/presspass/features/2008/apr08/04-08gsi.mspx
We realize that many people are the unsuspecting victims of counterfeiters who take advantage of people who are just trying to get a special deal on the software they need. As a part of our engineering efforts, Microsoft will soon introduce an Office Genuine Advantage (OGA) notifications pilot program in Chile, Italy, Spain and Turkey that will be distributed through a voluntary Microsoft update. There will be no personal data collected or shared with Microsoft as customers implement the OGA notifications update. These notifications are designed to help alert customers who have acquired and are using non-genuine Office. Once notified, customers can take action to reduce the risk of running counterfeit software by getting genuine Office through the online purchase programs or by going to a local authorized Microsoft reseller.
http://www.gripe2ed.com/scoop/story/2008/4/18/0119/18584
On April 15th, a day when many of us are busy enough as it is, a reader saw a "critical update" for Microsoft Office in Windows Software Update Services (WSUS). As he always tries to keep the Windows and Office users at his company up-to-date, he started to download it until he saw it was something called Office Genuine Advantage Notifications (KB949810). The reader is familiar with OGA and was certain all of his Office installations were good, but he also knew he wanted no part of OGA Notifications.
I called Microsoft and found out that by mistake the OGA Notification software was available to all briefly on tax day. "The Office Genuine Advantage notifications update (KB949810) is intended only for Microsoft Office users in Italy, Spain, Turkey and Chile," said Cori Hartje, director of Microsoft's Genuine Software Initiative. "For a short time on the 15th of April, it was made available to users in other countries. A number of users who proactively sought product updates in this time frame were able to download Office Genuine Advantage notifications. We commend those users who actively seek product updates and apologize for any inconvenience or confusion this update may have created. We have taken steps to limit access to this update only to those users in Italy, Spain, Turkey and Chile."
