While I agree with most of Jeff's sentiments - I do have to diverge on marking how fast software moves by something as arbitrary as a version number. Something such as versioning is completely ad-hoc and should not mark the advancement/maturity of a software product. How long did VLC take to get to version 1.0? That does not mean their development/release cycle is any slower than Chrome's. Perhaps I am being a bit drastic here, but it appears to me that judging software iteration speed by a version number is almost as lame as marking a programmer's efficiency by the number of lines of code he writes in a business day.