[r3.4] ChangeLog: v3.4.4 release notes (#21889)

Author: yperbasis

ChangeLog.md

@@ -1,6 +1,19 @@
 # Changelog
 
-## [3.4.3] "Splashing Saga" – TBD
+## [3.4.4] "Splashing Saga" – 2026-06-18
+
+v3.4.4 is a bugfix release recommended for all users.
+
+**Bugfixes**
+
+- execution/stagedsync: prune in-RAM overlay when execution unwind is a no-op (#21824, #21847) by @JkLondon  — third fix for the post-reorg `gas used mismatch`.
+- caplin: serialize uint64 beacon API fields as JSON strings (#21805) by @BitWonka - Per the beacon-APIs spec, Uint64/Gwei fields must be serialized as JSON strings. Several Caplin response types were emitting them as JSON numbers, breaking spec-compliant clients. Fixes #20562.
+
+**Full Changelog**: https://github.com/erigontech/erigon/compare/v3.4.3...v3.4.4
+
+---
+
+## [3.4.3] "Splashing Saga" – 2026-06-02
 
 v3.4.3 is a bugfix release recommended for all users.