Top secret! New MS Whistler

ZDNet reports that Microsoft has told its army of testers to expect major changes in the second beta release of Whistler, the code that will eventually become the next version of Windows. Rumor has it the bulk of those major changes are cosmetic in nature, involving a new user interface. Microsoft isn't saying a word, preferring to take "unusually high security precautions" to ensure no one sees the new design before the beta is released. If the beta security is anything like Microsoft's recent site security, we should expect to see a screenshot or two within the next week.