As Java 8 in EOL period, is officially unsupported by Oracle and also a second post-8 Long-Term-Support version of Java was recently published (Java 17), Unity will soon drop its support for the dated Java 8.

Unity, since a long time, supports running on Java 11. Since version 3.8.0 (roughly expected in December 2021) Java 11 will be also the minimum version of JVM, on which Unity will run.

It is advised to update Unity deployments to use Java 11 even before that release.