Nodejs from Node.js v0.12.7 To Version 4.0

Why the discrepancy in the version numbers?

Once upon a time there was just node.js then some people were unhappy with the speed of releases of node.js so they created io.js.

A few months later io.js converges back with Node.js 0.12.x into a unified Node.js 4.0.

Hence version Node.js 4.0 is born.

4.0 is the new 1.0
4.0 is the new 1.0 –