Windows Vista, Office 2007, and IE7 are widely recognized by independent analysts to offer dramatic improvements in security, management features, new collaboration capabilities and productivity enhancements. Ultimately we think we can help DOT understand how these products can help its enterprise organization.
Of course they do. It means they make more money. I don’t think DOT cares as much about the security as much as it does the actual compatibility and stability though. At least that’s what I’ve gained from previous news stories.
Source: All About Microsoft Blog