What is jQuery (edge) in jsfiddle.net?

Question

In jsfiddle.net if one choose framework as jQuery or Mootools they will get an option for choosing jQuery ( edge ) and Mootools( edge ).

I googled it quite a bit but

Answer 1

It is the jQuery nightly build from github...

jQuery JavaScript Library v1.6.3pre Live From Git (b22c9046529852c7ce567df13397849e11e2b9cc)

Here is the link: link (jsfiddle uses this)

Here is the jQuery github link: github-link