Chrome and others nibble away IE usage by Stephen Shankland at CNET
Chrome offers an interesting contrast to IE's slow change rate. By default, Google upgrades the browser automatically without giving people any say-so. That might cause some heartburn among some, but it rapidly distributes security patches and new features. To Google, Chrome version numbers are for bookkeeping in the background, not for splashing prominently in front of users.
I found this snippet interesting. It sounds as if MS was following traditional product management strategy, where version numbering is part of marketing, while Google is tweaking it. Google's marketing was quite unusual. When the ycame up with GMail and some other products, they didn's advertise them. Users would somehow find out about them during beta, and start using, so that when the final production release comes out, it's no longer a news.