# Multi Module Tree Release 2.1
October 2024
We upgraded! What's new? Learn more about new features, technical changes and solved bugs in 4App Multi Module Tree.
Note on upgrading: If you skip a version when upgrading, check all release and patch notes in between for important information. They apply cumulative.
Note on individualization: If your 4ALLPORTAL is highly customized or if you installed individual apps, please contact your implementation partner before upgrading. We recommend checking your custom contents, especially layouts and object renderers, carefully after an upgrade.
# Improvements
- Root loaders: We have added a new parameter "addTreeRootFilter" to the default layout "multi_module_tree" to simplify the setting of this parameter for root loaders.
# How to Get These Improvements
- Upgrade 4App Multi Module Tree to version 2.1
- Dependency: Upgrade 4App Core Engine to version 4.2