Is this the result of the recent leakage? Maybe not but (casuality?? 
) today Microsoft has released to the public the Beta 2 version of Internet Explorer 7.
Lots of improvements are ready to be tested on this Beta 2 and now we can say that IE has finally reached the level that a modern browser must to have.
One things that makes me thinking is about CSS support: is IE 7 testing it or it's on its final stage? I hope for the first option because this Beta 2 lacks a lot on CSS support...