There are now several providers of builds of OpenJDK. In this presentation, we look at what aspects of a JDK distribution you should consider when making a choice.
FoU = Field of Use. restriction prevented people using Java in embedded applications without buying a license.
CPE = Classpath Exception. Eliminates the problem of the GPL license being viral, which would require you to make the source code for your application available.
Late 2018 probably means JDK 11, which comes out in September.
The idea of eliminating differences is so that the two binaries from Oracle (reference last slide) will be functionaly the same.