I’m beginning to detect a weird kind of consistency to the way Mozilla assigns version numbers to Firefox.
If Mozilla staffers don’t want to formally announce a new version, they give it a minor revision number, like 46.0.1, which was released on Tuesday. If, on the other hand, Mozilla decides to announce a new version of Firefox, they give it a major revision number, like last week’s Firefox 46.0.
This sounds silly, but it seems to fit what we know. For example, despite the major difference in revision numbers between 46.0 and 46.0.1, both versions consist of a few bug fixes.
The release notes for Firefox 46.0.1 list six changes, all bug fixes for minor issues that aren’t particularly interesting. None of the fixes seem related to security.