Finalise v1.6.3 release notes

docs/release-notes-v1.6.3.md

@@ -1,7 +1,6 @@
 # FreeDMR v1.6.3 release notes
 
-Release candidate documentation. The release tag and stable images have not
-yet been published. This release collects maintenance changes since v1.6.2
+This release collects maintenance changes since v1.6.2
 and supports the optional Data Gateway v0.2.0 / Kryten v0.1.0 SMS services.
 
 ## Changes
@@ -76,13 +75,14 @@ optional Supervisor-managed exporter.
 
 ## Images And Validation
 
-The tag build is intended to publish latest, v1.6.3-with-proxy and
+The tag build publishes latest, v1.6.3-with-proxy and
 development-latest for Linux ARMv7, AMD64, i386 and ARM64. Development builds
-update development-latest only. Image publication is not deployment.
+update development-latest only. Check that the tag pipeline has succeeded
+before pulling release images. Image publication is not deployment.
 
 All 380 local tests passed with UDP integration and the pinned current
-dashboard parser enabled. Published-image smoke tests and final physical-terminal
-SMS checks remain separate release gates; do not interpret local tests as
-proof of RF delivery. DMR remains a
-best-effort amateur service, subject to RF loss, busy channels and terminal
-interoperability differences.
+dashboard parser enabled. Development-image smoke checks and live AnyTone SMS
+request/reply tests on Hawk also passed, with intermittent confirmed-message
+failures observed. This is not validation of every radio or architecture.
+DMR remains a best-effort amateur service, subject to RF loss, busy channels
+and terminal interoperability differences.