From Wikipedia: This edition combines all the features of the Home Premium and Enterprise editions, a game performance tweaker (WinSAT), and "Ultimate Extras". On January 7, 2007, at CES, Microsoft began to announce what some of these Ultimate Extras will be. When Vista launches to consumers on January 30, Microsoft will immediately make the following Extras available for Ultimate users: "Dream Scene", a utility that will allow for full-motion video desktop backgrounds; "Hold'Em", a Vista-customized version of the Texas Hold'Em poker game; Multi-user interface language packs, designed to allow individuals fluent in different languages to share the same PC; BitLocker Online Secure Key Storage, where Ultimate customers will be offered a secure place to store their BitLocker encryption keys in the Online Vista Marketplace; and "Digital publications," a collection of tips and tricks, blog links and other resources for getting the most out of Ultimate.