diff --git a/docs/v8.md b/docs/v8.md
index d0dc40e..949504c 100644
--- a/docs/v8.md
+++ b/docs/v8.md
@@ -47,7 +47,14 @@ everything new lives under `packages/`.
 - [ ] Phase 2 (remaining): adoption-style hydration with mismatch
       warnings, Playwright suite in a real browser, benchmarks vs
       nanohtml v1 / µhtml
-- [ ] Phase 3: v8 wiring (`toStream`, devtools, codemod)
+- [ ] Phase 3: v8 wiring (`toStream`, devtools, codemod). Includes the
+      answer to choojs/choo#653 (async/lazy routes): route handlers may
+      resolve lazily via native import(); browser renders previous tree
+      or a loading view until resolution, server awaits inside toStream
+      (toString stays sync and fails loudly). Deliberately deferred until
+      toStream exists so the SSR half ships with the browser half — the
+      missing server story is what stalled #653. API shape (thenable
+      handler vs lazy() wrapper vs loader-view option) goes to the RFC.
 - [ ] Phase 4: bankai v10 (Vite 8/Rolldown shell, SSR middleware,
       103 Early Hints, service worker, precompression)
 - [ ] Phase 5: docs, examples, launch