What is the current JNLP specification (version) for OpenWebStart (Java SE 11)?
There is an inofficial JNLP version list here, but only up to Java SE 8.
Should still the DTD from Oracle/ Sun be used?
<!DOCTYPE jnlp PUBLIC "-//Sun Microsystems, Inc//DTD JNLP Descriptor 6.0//EN" "http://java.sun.com/dtd/JNLP-6.0.dtd">
Or is there a newer version? Or even an official XSD?