Tapestry 5.5.0 is a drop-in replacement for Tapestry 5.4 releases. 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 main new features are:
- Added support for Java 9, 10, 11 and 12 bytecode. Tapestry 5.5.0 now supports Java 8 through 12.
- Added support for on-the-fly TypeScript compilation in the tapestry-webresources module. See TypeScript for more info.
- Added the ability to switch between CSS frameworks: Bootstrap CSS 4, Bootstrap 3 (the default for Tapestry 5.4), or your own CSS (in this case, Tapestry doesn't provide any CSS at all). See CSS for more info.
- Added a "then" parameter to the If component. See If component docs for more info.