Source: TrueZIP Project
Story Link: https://truezip.dev.java.net/release-6_4.html

The TrueZip project has released version 6.4. They write in, "A minor release number increase, but a major improvement: TrueZIP 6.4 fixes all known bugs, significantly improves performance in many sectors and comes with an overall updated Javadoc for the core package de.schlichtherle.io."