[FSSDK-0000] add Local Holdouts feature description to CHANGELOG

Author: muzahidul-opti

CHANGELOG.md

@@ -4,6 +4,13 @@
 July 7, 2026
 
 ### New Features
+
+**Local Holdouts**: Added support for Local Holdouts, enabling holdout experiments
+to be scoped to specific feature flags rather than applied globally.
+Local Holdouts let you measure the true incremental impact of individual features
+by holding out a subset of users from specific rollouts while still serving them other experiences.
+See [Holdouts docs](https://support.optimizely.com/hc/en-us/articles/38941939408269-Global-holdouts) for more information.
+
 - Add localHoldouts to datafile for backward compatibility ([#633](https://github.com/optimizely/java-sdk/pull/633))
 
 ### Fixes