diff --git a/docs/M4-Fleet-Health.md b/docs/M4-Fleet-Health.md
index f6e1827..11e36c2 100644
--- a/docs/M4-Fleet-Health.md
+++ b/docs/M4-Fleet-Health.md
@@ -1,11 +1,13 @@
 # M4 - Fleet health, recovery, routing, and capacity
 
-**Status:** Design accepted on 2026-08-15. No M4 implementation exists yet.
+**Status:** Design accepted on 2026-08-15. CB-573 part 1 has shipped the classification model and
+the `bridge_list` capacity view; the remaining M4 units are not yet shipped.
 **Scope:** Fleet evidence, safe mechanical repair, lead routing, capacity reporting, and optional
 human notification.
-**Grounded in:** `inject/StatusPoller`, `inject/StatusRefiner`, `inject/CompletionResolver`,
-`inject/Injector`, `session/SessionManager`, `msg/MessageService`, `msg/ReplyInbox`,
-`msg/ReplyPushLoop`, `msg/LeadHeartbeatLoop`, `mcp/PrimaryRegistry`, and `herdr/AgentControl`.
+**Grounded in:** `health/FleetHealth`, `health/PaneBudget`, `inject/StatusPoller`,
+`inject/StatusRefiner`, `inject/CompletionResolver`, `inject/Injector`, `session/SessionManager`,
+`msg/MessageService`, `msg/ReplyInbox`, `msg/ReplyPushLoop`, `msg/LeadHeartbeatLoop`,
+`mcp/PrimaryRegistry`, and `herdr/AgentControl`.
 
 ## 1. Problem and decision boundary