diff --git a/docs/audits/2026-09-07-k1-causal-diagnostics-r8.md b/docs/audits/2026-09-07-k1-causal-diagnostics-r8.md
index bb749ef..46c56bb 100644
--- a/docs/audits/2026-09-07-k1-causal-diagnostics-r8.md
+++ b/docs/audits/2026-09-07-k1-causal-diagnostics-r8.md
@@ -42,3 +42,21 @@ monotonic collection timestamps and SHA-256 hashes under private/acceptance/
 k1-node085-20260907-bluetooth-1355. Browser cache clearing for that attempt has
 not been confirmed. No hardware commands were issued by the agent. The next
 physical check remains through the owner UI after clearing browser cache.
+
+## Prepared and staged release
+
+Source 4f715e41d23a20c129111a4b550d1ccde2d311e4 produced Node 0.8.6
+(109814516 bytes, SHA256
+0d7e313dedefdb6609cfec5b6b7fa983d7886349255b19bb61e3f6a3201af916)
+and private K1 0.1.5+private.1 (318107944 bytes, SHA256
+9b271a418b7a64c336e70164d1592e41798afb29fc7de813abff026309772d53).
+Node TypeScript/build, Go packaging and its UI boundary test passed. The
+Design Guideline pin remains 5b882bc; existing application material is unchanged.
+The private release is retained in
+private/releases/mission-core-node-k1-20260907-r8, with previous releases kept.
+
+Transfer checksums matched. APT simulation selected two upgrades and no
+removals. Fleet reported an idle, disconnected K1 and the same terminal failed
+attempt before the single Ubuntu GUI installer was opened. It awaits owner
+sudo authentication. Installed versions, physical Bluetooth cause and
+read-only control readiness remain pending, not accepted.