Weird, for me it just says "You are using Google Chrome 3" with no release date. In IE and Safari it tells me the release date.
Wonder if the version discrepancy is due to OS?
Google Chrome 3
Internet Explorer 7 (released October 2006)
Firefox 3 (released June 2008)
Techy: If-it-weren't-Google-it-might-be-marketing-but-Google-would-never-do-that.