Update March 7th 2014: the article is now also available without registration on the Oracle Technology Network.
Update March 11th 2014: the article is now also available on JaxEnter (best format and source code indentation).
My latest article for Oracle Java Magazine has been published in the January/February 2014 edition:
Nashorn also serves as a showcase for the JDK team working on
invokedynamic, as the implementation
of this language runtime on the JVM poses quite a few challenges. In this regard, I highly recommend
the Devoxx 2013 talk by Atilla Szegedi:
Finally, you may also look at DynJS. It is an independent project that also
much but it seems like a worthy project!