Fredhopper Discovery Platform 26.2.0 is fully compatible with the previous release, FAS 25.4.0.

New Java Integration Client Library

A new Java integration client library, ws-client-jakarta.jar, is now available. This library uses Jakarta namespace (jakarta.* imports) for FAS domain object annotations, making it easier for customers to upgrade their Java integrations to Jakarta.

The library can be found in the following locations:

• As part of the fas-assembly bundle under client/java

• In the extranet repository: https://extranet.fredhopper.com/fas/

FAS Extensions Upgrade

FAS 26.2.0 has been upgraded to Jakarta namespace and JUnit 5. As a result, all existing FAS extensions must also be upgraded to versions compatible with Jakarta. 

Below is the list of supported extensions for FAS 26.2.0 (all upgraded to version 4.0):

FAS 26.2.0 now returns all search passes in the response by default, even if Search A/B tests are not enabled. To ensure backward compatibility, this functionality has a feature flag and can be disabled in system.xml if needed. However, by default, the feature is enabled. If Search A/B tests are enabled, the behavior is unchanged from before regardless of this feature flag.

To disable the feature, add the following XML snipped under node com/fredhopper/features in system.xml:

<node name="features">
  <entry key="return-all-search-passes" value="false" />
</node>