Version 2.6.0 was released on 21 March. The main jars require Java 11 or later. These are Java module jars containing modules org.hsqldb and org.hsqldb.sqltool. An hsqldb-jdk8.jar is also in the zip package. Version 2.6.0 jars for Java 8 and Java 6 are now available from http://hsqldb.org/download/. The documentation on the web site covers the latest release.