Originally Posted by RedMist
While this is not true in all cases, generally companies follow this pattern for product versioning :X.YY.ZZ
Originally Posted by speedtouch
Where X is the major Architectural change (ex: 3.0 for Enyo, etc), YY is a major update and additional features, enhancements etc (same release level, but updates with in the same architecture), and ZZ is minor updates and bug fixes.
End users (like us) may not see all minor releases since they would be internally managed and bundled together. Hope that helps.