The article uses jsFiddle while the legal disclaimer on JSFiddle reads JSFiddle. The announcement of "The Lifting" uses JSFiddle. Meanwhile, the documentation can't make up its mind:

    jsFiddle Documentation

    To file a bug in JSFiddle

Though it mostly uses jsFiddle.

/begin edit

The Medium post uses JSFiddle: https://medium.com/jsfiddle-updates/the-lifting-cb3c9f216c2f...

I think it's safe to assume it has been changed to JSFiddle.

/end edit

More on topic: I'll have to see if there was anything new besides a facelift. Personally using Codepen atm.