This is a tracking bug for Change: java-openjdk 10 - rolling release for Short Term Support releases of OpenJDK
For more details, see: https://fedoraproject.org/wiki/Changes/java-openjdk-10
OpenJDK have release cadence of 6 months. but 3/4 of them are Short Term Supported for 6 months only. This package is designed to harbore them. Currently it is build on openJDK 10. LTSs (next is 11) will go as separate packages.
See announcement: http://mail.openjdk.java.net/pipermail/discuss/2017-September/004281.html<br />
See java SIG plans: https://jvanek.fedorapeople.org/devconf/2018/changesInjavaReleaseProcess.pdf