Microsoft is encouraging people to STOP using IE6 citing the number of security holes and a lack of modern web standards in that version.
It's now 10 years old and time for people to move on; so Microsoft is on an active campaign to encourage people to upgrade to newer browsers (of course, in doing so they'll also likely encourage people to 'try' other browsers
).
They've set up a web site to monitor the drop in IE6 use
http://www.theie6countdown.com/oh yeah.....and IE9 is out soon!