You can probably replace the 0 with any digit, and it will remain true.

I just run super alpha quality software all the time so that the “.0” release seems like a breath of fresh air in comparison.

Depends on the project, but it's absolutely true for some.

yeah, I'd be curious to see what a distribution of "time until first confirmed bug / next bugfix release" looks like. I strongly suspect the .0 versions don't last long in the vast majority of cases.

It may not be a True Fact, but it's not used that way. It's a reliable heuristic, nothing more.

For OS X the .3 release seems to be the sweet spot.