That's because, while IE 9 is much improved over previous versions of IE, very few of the new features in IE 9 are new to the current browser market. In fact, most of the new features in this beta release are simply a matter of IE catching up to Chrome, Firefox, Safari and Opera.
Humm..... Didn't Microsoft claim the same for Vista?
Lets see how much WANTED old features they made hard to enable. Not all of us want the fantasist thing on the block. AND will it work well with WinXP?