The versioning is all made up, if you didn't know already. Each company makes up what a version number is. I remember when I first started learning programming, and wanted to know what the versions meant. I found out there is no standard people use and they just usually make up whatever. Then found out along the road, marketing gets involved and wants you to show it as a specific version because competitors are at that number. So let's skip a whole version number.
There are some people who wrote standards for it, but no one follows it. I wish someone did, it could give consumers a better idea what to expect, I would think.