Office Ultimate is similar to the enterprise edition that is available only to large businesses, and includes standards like Word, Excel, PowerPoint and Outlook, along with Publisher, the OneNote note-taking software, the Groove collaboration suite, Access database and InfoPath forms software. Microsoft did not announce pricing for the enterprise edition, since it is only available for volume licensing customers.

Microsoft has been looking to higher-end versions of both Windows and Office as a way to help grow its two core businesses, which already have dominant shares of their respective markets. CEO Steve Ballmer first noted that such products were on the way back at a financial analysts' meeting in July 2005.

With Vista, Microsoft is adding an Ultimate edition that pairs the best of its business and consumer features. The company is also planning a concerted effort to pitch the Home Premium version over the lower-end Home Basic edition.

The Ultimate Edition was mentioned in a slide in Chairman Bill Gates' keynote speech on Tuesday at the Windows Hardware Engineering Conference and noted by Windows enthusiast site Bink.nu.