What this means is that by supporting IE7 with your sites and apps beyond this date you’re implicitly suggesting to your users that it’s OK to stay on a browser that’s no longer receiving security updates, which I think we’d all agree is a bad idea.
You all looking forwards to this date too? :)
[1] http://support.microsoft.com/lifecycle/?p1=8722 [2] http://support.microsoft.com/lifecycle/?c2=11732