Yeah, they are just too smart. Smart and cruel. I mean, look at the size of that box, and compare it with the size of the cupcake. It's a freaking tease.
It's a conceptual change. If your product is going to be incrementally evolved, major releases won't exist, so version numbers are not milestones anymore.
If they didn't do this, but switched to incremental development and still followed standard versioning practices, we'd be stuck at 4.xxx forever :)
I like when developers can put aside the retarded faux hatred we are all supposed to have for each other as dictated by our corporate / OSS overlords and do things like this, of course I am sure many will find some demeaning/ulterior motivevs, because you know, no way the IE team actually has human beings on it.
IE team loves to poke shots at other browsers. Anyone remember the giant E placed on the lawn of Netscape's office in Mountain View? I think it was ~1997. They then dominated the browser market for the next few years.
http://www.openbuddha.com/2011/03/22/another-version-of-fire...
What does this mean?! Perhaps Firefox 5's release is not as significant as earlier versions? ;-P