Tapestry 5.6.2 is a drop-in replacement for Tapestry 5.4, 5.5 and 5.6 releases. It's a recommended upgrade for 5.6.1 and 5.6.0. To upgrade, just update the dependency in your build configuration (Maven POM, Gradle build script, etc.) – or Download the new JAR file -- and the new version will just work. However, please review the How to Upgrade instructions before upgrading.
The most interesting improvement is TAP5-2640: better exceptions in tapestry-json code, plus JSONArray now implementing Collection and JSONObject implementing Map. Full details at https://tapestry.apache.org/release-notes-562.html. Thanks for everyone involved in this release! Happy coding! -- Thiago
