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Re:Koa – Next-generation web framework for Node.js by usethis on Thursday December 19, 2013 @05:24AM (#6933809)
it's because of the hyperbole:

> next generation web framework for node.js

I don't think they need that, just list the stand-out features first. And yes, referring to past accomplishments does give it more credibility.

Re:Koa – Next-generation web framework for Node.js by eknkc on Thursday December 19, 2013 @06:40AM (#6934028)
This utilizes generators heavily. Generators are within the ES6 spec, which is the next generation of JavaScript.

This might be one of the very few instances that "next generation" is a valid statement.