Going forward this is what these numbers mean and how they relate to you.
E.g. 2.1.0-beta
2 - Latest stable release number
.1 - Latest beta release number
.0 - Internal build number
-beta - Signifies that this is a beta version
So the next beta will be:
2.2.0-beta
and the next stable release will be:
3.0.0
Internally, we build nightly alpha version that increment to the next beta:
2.1.30-alpha