[scriby]

It would be tough for Fibers to be totally abandoned, as http://www.meteor.com/ relies on it.

I don't think it's really needed any code updates recently, as it works on Linux / OS X / Windows and all recent versions of node.

I think it's somewhat hard to tell what the adoption of fibers looks like, as it typically wouldn't be used by other modules in npm. You don't want to force people using your module to use fibers. So, it would mostly see its usage in applications.

It will be interesting to see what happens to fibers once generators ship with core node (available now under the --harmony-generators v8 flag). The most compelling reasons for using fibers can also be met by using generators.

(I maintain a library built on top of fibers: https://github.com/scriby/asyncblock)