It means that the IE team clearly saw through Mozilla's transparent attempt to get more cake by releasing more often.

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.

I meant that in the sense that they are switching to rolling versions (i.e. no more versions, it's just 'firefox')

Firefox 5 is the first of a string of insignificant releases. See http://en.wikipedia.org/wiki/Firefox#Development

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 :)

Times are tough for MS, can only afford a cupcake now. Maybe a donut next... then an eclair...

Given the content per major release of Firefox now, an eclair is the most apt thing :P

Then onto gingerbread or perhaps an cream sandwich.