Just another another browser, yet much of the media has it as a Microsoft Killer. I can't see how. Google Chrome is probably better then IE, but so is Firefox, and it took years for Firefox to get the market share it has now.
Googles track record in developing software is not very good - it takes Google a long time to finish applications and they are slow in adding features. So why all the hype around Google Chrome? (yes i saw the comic and yes there are some neat concepts, but nothing Firefox couldnt adopt)
For now, the main upshot is that webmasters and software developers have another web browser to test and fix display issues on. Great.